Player · 235 career games · 2019-20–2026-27

Kotaro Uchikawa

Calls and riichi close to the league average. Stands out for early riichi, smaller wins and chasing riichi. Career record: -0.3pt per game, close to average.

Early riichi
Efficiency first

Actual / game

-0.3

235 career games

Skill estimate / game

-0.2

90% interval -4.1 to +3.7

Estimate, luck removed

+0.1

adjusted for starting hands, draws, ura-dora

Weight of the record

63%

share of the estimate from the record

Styleleague percentile, career

Average win value6,342
Riichi rate23.0%
Deal-in rate11.1%
Win rate20.4%
First riichi rate74.9%
Average riichi turn9.17
Call rate23.6%
Tenpai rate at exhaustive draws38.7%
Staying in vs riichi14.3%
Push rate vs riichi (1-shanten)40.7%
Push rate vs riichi (2+ shanten)28.3%
Tile efficiency match rate75.0%
Tenpai turn (luck-adjusted)8.15
Immediate riichi rate71.9%
Dama rate12.0%

Color only for metrics with a good side (red = good, blue = bad). Metrics of style, such as riichi rate, call rate and tile efficiency match rate, are gray. For tenpai turn, further right means later (a larger turn number). Values are estimates.

Placements235 career games, average placement 2.49

1st27.2%64×
2nd22.6%53×
3rd23.8%56×
4th26.4%62×

Riichi and callsbalance and outcome of hands with riichi or calls

Riichi income2,366
Riichi win rate43.9%
Riichi deal-in rate A14.5%
Riichi deal-in rate B11.3%
Riichi good-wait rate49.3%
Riichi exhaustive draw rate20.3%
Call income606
Win rate after calling32.9%
Deal-in rate after calling10.9%
Tenpai rate after the first call26.7%

Income is the average points won or lost in those hands (riichi sticks and honba included).

Net efficiency and morecalculated as on Mahjong Soul Paifuya, per hand

Net efficiency809
Deal-in loss648
Average win turn12.35

Deal-in loss = deal-in rate × average deal-in; net efficiency = win rate × average win − deal-in loss. Win and deal-in values include honba and riichi sticks. Win turn is the number of tiles discarded at the table when the win came ÷ 4 + 1. Win efficiency (win rate × average win) is not shown: players with a high win rate win smaller hands, the two cancel out, and differences between players cannot be told apart from chance.

Skill estimateleague percentile of the estimates

Points per game-0.2
Points per game, luck removed0.1
Average placement2.50

Luckfurther right is luckier; values are differences from the league average (the dealer tsumo rate is the rate itself)

Points from luck (/game)-0.5
Draw luck+0.1%
Starting hand (shanten)-0.00
Dora and red fives dealt+0.02
Ura-dora luck+0.02
Ippatsu rate-2.4%
Avoiding a chase riichi (/first riichi)-0.5%
Mangan+ tsumo against dealer rate13.5%

Where the points came fromchange in expected points, all stages

Own wins+46.8
Deal-ins-20.2
Others' tsumo-24.5
Ron between others-2.0
Exhaustive draws-0.2

Change in expected points per game. Total -0.2pt/game (235 games).

As a table

Hand result	Hands	Total	Per game
Own wins	589	+10991.3	+46.8
Deal-ins	320	-4757.6	-20.2
Others' tsumo	763	-5760.9	-24.5
Ron between others	606	-468.6	-2.0
Exhaustive draws	598	-43.1	-0.2

Hand balance breakdownpoints won or lost per hand, all stages

Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	10.0%	+850	+919	-68
Wins with calls	8.0%	+447	+382	+65
Dama wins	2.4%	+148	+173	-24
Deal-ins to riichi	5.2%	-385	-360	-25
Deal-ins to open hands	4.2%	-200	-203	+3
Deal-ins to dama	1.7%	-99	-101	+2
Others' tsumo	26.5%	-756	-752	-4
Other (exhaustive draws, etc.)	41.9%	-67	-60	-7
Total (per hand)		-60

Every career number (estimate, 90% interval, weight of the record)

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.49	2.50 (2.40 to 2.59)	62%	58	235 games
Points per game	-0.3	-0.2 (-4.1 to 3.7)	63%	49	235 games
Points per game, luck removed	0.2	0.1 (-3.3 to 3.6)	70%	49	235 games
1st-place rate	27.2%	26.5% (22.7% to 30.2%)	65%	74	235 games
4th-place rate	26.4%	25.9% (22.1% to 29.7%)	66%	25	235 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	20.5%	20.4% (19.3% to 21.5%)	78%	70	2,876 hands
Deal-in rate	11.1%	11.1% (10.2% to 11.9%)	75%	39	2,876 hands
Riichi rate	23.1%	23.0% (21.9% to 24.2%)	80%	54	2,876 hands
Call rate	23.6%	23.6% (22.3% to 24.9%)	98%	58	2,876 hands
First riichi rate	74.1%	74.9% (72.7% to 77.0%)	60%	13	664 riichi
Average riichi turn	9.13	9.17 (8.99 to 9.36)	80%	88	664 riichi
Average win value	6,238	6,342 (6,084 to 6,600)	70%	13	589 wins
Average deal-in value	5,684	5,656 (5,386 to 5,927)	52%	37	320 deal-ins
Win efficiency	1,446	1,467 (1,399 to 1,535)	25%	37	2,876 hands
Deal-in loss	656	648 (596 to 701)	56%	35	2,876 hands
Net efficiency	790	809 (702 to 915)	59%	31	2,876 hands
Push rate vs riichi (1-shanten)	40.6%	40.7% (37.6% to 43.7%)	74%	47	524 hands facing riichi
Push rate vs riichi (2+ shanten)	28.8%	28.3% (25.4% to 31.2%)	86%	72	535 hands facing riichi
Tenpai rate after the first call	26.8%	26.7% (24.1% to 29.3%)	92%	54	679 first calls
Average win turn	12.15	12.35 (12.24 to 12.47)	13%	94	589 wins
Tenpai rate at exhaustive draws	38.3%	38.7% (35.8% to 41.6%)	77%	31	598 exhaustive draws
Staying in vs riichi	14.7%	14.3% (13.3% to 15.4%)	42%	78	1,483 hands facing an opponent’s riichi
Tile efficiency match rate	75.1%	75.0% (74.4% to 75.6%)	98%	82	15,401 discards
Average ukeire loss (tiles)	0.97	0.97 (0.94 to 1.01)	96%	17	14,819 discards
Breaking shape for value	2.2%	2.2% (2.0% to 2.4%)	94%	74	15,401 discards
Tenpai turn (luck-adjusted)	8.12	8.15 (8.07 to 8.24)	28%	33	638 tenpai hands
Immediate riichi rate	71.9%	71.9% (69.2% to 74.6%)	85%	52	638 tenpai hands
Dama rate	11.9%	12.0% (9.8% to 14.2%)	91%	37	589 wins
Riichi income	2,222	2,366 (1,999 to 2,733)	64%	11	664 riichi
Riichi win rate	43.4%	43.9% (41.1% to 46.8%)	79%	15	664 riichi
Riichi deal-in rate A	15.2%	14.5% (13.2% to 15.8%)	20%	19	664 riichi
Riichi deal-in rate B	11.7%	11.3% (10.0% to 12.7%)	42%	13	664 riichi
Riichi good-wait rate	49.1%	49.3% (46.6% to 52.0%)	69%	43	664 riichi
Riichi exhaustive draw rate	20.6%	20.3% (18.1% to 22.4%)	73%	74	664 riichi
Call income	711	606 (385 to 827)	53%	92	679 calls
Win rate after calling	34.0%	32.9% (30.4% to 35.3%)	73%	96	679 calls
Deal-in rate after calling	10.6%	10.9% (9.1% to 12.6%)	73%	76	679 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	-0.00	39	2,876 hands
Dora and red fives dealt	+0.02	78	2,876 hands
Draw luck	+0.1%	60	35,152 tile draws
Ura-dora luck	+0.02	54	288 riichi wins
Ippatsu rate	-2.4%	17	288 riichi wins
Avoiding a chase riichi (/first riichi)	-0.5%	45	492 first riichi
Mangan+ tsumo against dealer rate	13.5%	19	763 tsumo against
Points from luck (/game)	-0.5	49	235 games

By seasonRegular Season

2026-27 (14 games · skill estimate -0.9pt/game)

Style

Average win value6,443
Riichi rate23.1%
Deal-in rate10.5%
Win rate19.9%
First riichi rate76.3%
Average riichi turn9.25
Call rate26.1%
Tenpai rate at exhaustive draws39.8%
Staying in vs riichi14.0%
Push rate vs riichi (1-shanten)41.3%
Push rate vs riichi (2+ shanten)31.4%
Tile efficiency match rate74.6%
Tenpai turn (luck-adjusted)8.15
Immediate riichi rate70.2%
Dama rate11.0%

Where the points came from

Own wins+36.2
Deal-ins-17.6
Others' tsumo-22.4
Ron between others-3.8
Exhaustive draws-1.7

Change in expected points per game. Total -9.4pt/game (14 games).

As a table

Hand result	Hands	Total	Per game
Own wins	31	+506.4	+36.2
Deal-ins	13	-246.7	-17.6
Others' tsumo	47	-314.2	-22.4
Ron between others	39	-53.8	-3.8
Exhaustive draws	31	-23.6	-1.7

Luck

Points from luck (/game)-2.5
Draw luck+0.1%
Starting hand (shanten)+0.05
Dora and red fives dealt+0.00
Ura-dora luck-0.06
Ippatsu rate-1.0%
Avoiding a chase riichi (/first riichi)+12.8%
Mangan+ tsumo against dealer rate12.8%

Every number for 2026-27

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.71	2.52 (2.30 to 2.74)	9%	20	14 games
Points per game	-9.6	-0.9 (-10.0 to 8.2)	9%	17	14 games
Points per game, luck removed	-7.2	-0.9 (-9.4 to 7.6)	12%	22	14 games
1st-place rate	14.3%	24.0% (15.1% to 32.9%)	10%	21	14 games
4th-place rate	35.7%	26.0% (17.0% to 35.1%)	10%	16	14 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	19.3%	19.9% (17.0% to 22.7%)	17%	52	161 hands
Deal-in rate	8.1%	10.5% (8.3% to 12.7%)	15%	89	161 hands
Riichi rate	24.8%	23.1% (20.0% to 26.2%)	18%	71	161 hands
Call rate	27.3%	26.1% (21.5% to 30.7%)	71%	71	161 hands
First riichi rate	80.0%	76.3% (71.5% to 81.2%)	8%	76	40 riichi
Average riichi turn	8.90	9.25 (8.77 to 9.74)	19%	68	40 riichi
Average win value	5,268	6,443 (5,791 to 7,095)	11%	6	31 wins
Average deal-in value	5,900	5,637 (5,030 to 6,245)	4%	28	13 deal-ins
Win efficiency	1,150	1,468 (1,359 to 1,577)	2%	14	161 hands
Deal-in loss	491	629 (512 to 746)	7%	84	161 hands
Net efficiency	658	822 (578 to 1,066)	7%	38	161 hands
Push rate vs riichi (1-shanten)	44.4%	41.3% (33.3% to 49.3%)	13%	57	27 hands facing riichi
Push rate vs riichi (2+ shanten)	47.1%	31.4% (23.7% to 39.2%)	27%	97	34 hands facing riichi
Tenpai rate after the first call	25.0%	25.4% (17.9% to 32.9%)	42%	55	44 first calls
Average win turn	11.67	12.37 (12.22 to 12.53)	1%	87	31 wins
Tenpai rate at exhaustive draws	38.7%	39.8% (32.1% to 47.6%)	15%	36	31 exhaustive draws
Staying in vs riichi	12.4%	14.0% (12.0% to 16.0%)	4%	33	89 hands facing an opponent’s riichi
Tile efficiency match rate	75.4%	74.6% (72.4% to 76.9%)	70%	68	773 discards
Average ukeire loss (tiles)	0.95	1.00 (0.87 to 1.13)	56%	30	748 discards
Breaking shape for value	1.8%	1.9% (1.3% to 2.5%)	45%	49	773 discards
Tenpai turn (luck-adjusted)	7.33	8.15 (8.02 to 8.29)	2%	1	35 tenpai hands
Immediate riichi rate	65.5%	70.2% (62.5% to 77.8%)	24%	20	35 tenpai hands
Dama rate	6.5%	11.0% (4.4% to 17.6%)	33%	36	31 wins
Riichi income	1,630	2,526 (1,664 to 3,389)	10%	28	40 riichi
Riichi win rate	40.0%	44.9% (37.5% to 52.3%)	19%	25	40 riichi
Riichi deal-in rate A	12.5%	14.3% (12.3% to 16.2%)	2%	65	40 riichi
Riichi deal-in rate B	12.5%	11.1% (8.4% to 13.8%)	4%	29	40 riichi
Riichi good-wait rate	50.0%	49.8% (43.3% to 56.2%)	12%	53	40 riichi
Riichi exhaustive draw rate	22.5%	19.7% (14.3% to 25.1%)	14%	63	40 riichi
Call income	-193	440 (-33.54 to 913)	7%	17	44 calls
Win rate after calling	29.5%	29.8% (23.7% to 35.8%)	15%	55	44 calls
Deal-in rate after calling	9.1%	11.2% (6.9% to 15.4%)	15%	55	44 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	+0.05	87	161 hands
Dora and red fives dealt	+0.00	49	161 hands
Draw luck	+0.1%	55	1,956 tile draws
Ura-dora luck	-0.06	33	16 riichi wins
Ippatsu rate	-1.0%	46	16 riichi wins
Avoiding a chase riichi (/first riichi)	+12.8%	97	32 first riichi
Mangan+ tsumo against dealer rate	12.8%	53	47 tsumo against
Points from luck (/game)	-2.5	38	14 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	9.9%	+755	+919	-164
Wins with calls	8.1%	+321	+382	-61
Dama wins	1.2%	+74	+173	-99
Deal-ins to riichi	2.5%	-213	-360	+147
Deal-ins to open hands	5.6%	-309	-203	-106
Deal-ins to dama	0.0%	0	-101	+101
Others' tsumo	29.2%	-745	-752	+8
Other (exhaustive draws, etc.)	43.5%	-99	-60	-40
Total (per hand)		-217

2025-26 (36 games · skill estimate 1.9pt/game)

Style

Average win value6,550
Riichi rate23.2%
Deal-in rate10.9%
Win rate20.9%
First riichi rate75.9%
Average riichi turn9.24
Call rate23.0%
Tenpai rate at exhaustive draws40.2%
Staying in vs riichi14.3%
Push rate vs riichi (1-shanten)42.0%
Push rate vs riichi (2+ shanten)27.7%
Tile efficiency match rate73.9%
Tenpai turn (luck-adjusted)8.17
Immediate riichi rate70.7%
Dama rate12.4%

Where the points came from

Own wins+51.4
Deal-ins-18.5
Others' tsumo-26.0
Ron between others+1.2
Exhaustive draws+0.8

Change in expected points per game. Total +8.8pt/game (36 games).

As a table

Hand result	Hands	Total	Per game
Own wins	101	+1850.5	+51.4
Deal-ins	48	-667.2	-18.5
Others' tsumo	129	-937.4	-26.0
Ron between others	95	+44.2	+1.2
Exhaustive draws	74	+27.0	+0.8

Luck

Points from luck (/game)+0.4
Draw luck+0.5%
Starting hand (shanten)-0.08
Dora and red fives dealt-0.01
Ura-dora luck-0.11
Ippatsu rate+5.3%
Avoiding a chase riichi (/first riichi)-1.8%
Mangan+ tsumo against dealer rate10.9%

Every number for 2025-26

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.25	2.45 (2.27 to 2.63)	20%	92	36 games
Points per game	8.9	1.9 (-5.5 to 9.2)	21%	90	36 games
Points per game, luck removed	8.5	2.3 (-4.3 to 8.9)	27%	87	36 games
1st-place rate	33.3%	26.9% (19.8% to 34.0%)	22%	87	36 games
4th-place rate	16.7%	23.0% (15.8% to 30.2%)	23%	90	36 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	22.6%	20.9% (18.8% to 23.0%)	36%	85	447 hands
Deal-in rate	10.7%	10.9% (9.3% to 12.4%)	32%	64	447 hands
Riichi rate	23.9%	23.2% (21.0% to 25.4%)	38%	72	447 hands
Call rate	23.0%	23.0% (20.0% to 26.1%)	87%	29	447 hands
First riichi rate	75.7%	75.9% (72.0% to 79.9%)	19%	54	107 riichi
Average riichi turn	9.09	9.24 (8.89 to 9.59)	39%	62	107 riichi
Average win value	6,450	6,550 (6,077 to 7,023)	29%	47	101 wins
Average deal-in value	5,379	5,591 (5,094 to 6,088)	14%	57	48 deal-ins
Win efficiency	1,657	1,483 (1,383 to 1,583)	5%	87	447 hands
Deal-in loss	596	632 (535 to 728)	16%	64	447 hands
Net efficiency	1,061	877 (678 to 1,075)	18%	82	447 hands
Push rate vs riichi (1-shanten)	44.9%	42.0% (36.2% to 47.9%)	30%	70	78 hands facing riichi
Push rate vs riichi (2+ shanten)	29.9%	27.7% (22.1% to 33.3%)	49%	67	87 hands facing riichi
Tenpai rate after the first call	16.5%	19.9% (14.3% to 25.6%)	63%	6	103 first calls
Average win turn	11.52	12.36 (12.22 to 12.50)	2%	100	101 wins
Tenpai rate at exhaustive draws	40.5%	40.2% (34.2% to 46.2%)	29%	49	74 exhaustive draws
Staying in vs riichi	16.4%	14.3% (12.5% to 16.1%)	10%	85	231 hands facing an opponent’s riichi
Tile efficiency match rate	74.1%	73.9% (72.5% to 75.3%)	87%	44	2,307 discards
Average ukeire loss (tiles)	0.98	0.99 (0.90 to 1.08)	79%	47	2,214 discards
Breaking shape for value	2.4%	2.3% (1.9% to 2.7%)	71%	82	2,307 discards
Tenpai turn (luck-adjusted)	8.15	8.17 (8.04 to 8.29)	6%	64	99 tenpai hands
Immediate riichi rate	69.6%	70.7% (65.3% to 76.0%)	47%	34	99 tenpai hands
Dama rate	11.9%	12.4% (8.0% to 16.9%)	62%	70	101 wins
Riichi income	3,271	2,768 (2,085 to 3,451)	22%	77	107 riichi
Riichi win rate	52.3%	48.4% (43.1% to 53.8%)	38%	92	107 riichi
Riichi deal-in rate A	12.2%	14.2% (12.4% to 16.1%)	4%	77	107 riichi
Riichi deal-in rate B	11.2%	11.1% (8.7% to 13.4%)	10%	45	107 riichi
Riichi good-wait rate	54.2%	50.9% (45.9% to 55.9%)	26%	77	107 riichi
Riichi exhaustive draw rate	15.9%	18.2% (14.2% to 22.3%)	31%	31	107 riichi
Call income	710	519 (113 to 925)	15%	67	103 calls
Win rate after calling	32.0%	30.4% (25.7% to 35.2%)	29%	59	103 calls
Deal-in rate after calling	11.7%	11.6% (8.3% to 14.9%)	29%	54	103 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	-0.08	4	447 hands
Dora and red fives dealt	-0.01	49	447 hands
Draw luck	+0.5%	72	5,297 tile draws
Ura-dora luck	-0.11	19	56 riichi wins
Ippatsu rate	+5.3%	80	56 riichi wins
Avoiding a chase riichi (/first riichi)	-1.8%	39	81 first riichi
Mangan+ tsumo against dealer rate	10.9%	72	129 tsumo against
Points from luck (/game)	+0.4	57	36 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	12.5%	+1,050	+919	+131
Wins with calls	7.4%	+452	+382	+70
Dama wins	2.7%	+154	+173	-19
Deal-ins to riichi	4.3%	-321	-360	+39
Deal-ins to open hands	4.0%	-145	-203	+58
Deal-ins to dama	2.5%	-157	-101	-56
Others' tsumo	28.9%	-798	-752	-45
Other (exhaustive draws, etc.)	37.8%	-59	-60	+0
Total (per hand)		+178

2024-25 (19 games · skill estimate -0.4pt/game)

Style

Average win value6,378
Riichi rate23.3%
Deal-in rate11.4%
Win rate21.0%
First riichi rate76.5%
Average riichi turn9.08
Call rate24.4%
Tenpai rate at exhaustive draws40.1%
Staying in vs riichi13.9%
Push rate vs riichi (1-shanten)42.8%
Push rate vs riichi (2+ shanten)28.0%
Tile efficiency match rate78.5%
Tenpai turn (luck-adjusted)8.16
Immediate riichi rate74.1%
Dama rate9.4%

Where the points came from

Own wins+48.3
Deal-ins-26.5
Others' tsumo-20.3
Ron between others-3.7
Exhaustive draws-1.1

Change in expected points per game. Total -3.4pt/game (19 games).

As a table

Hand result	Hands	Total	Per game
Own wins	58	+918.4	+48.3
Deal-ins	32	-503.5	-26.5
Others' tsumo	60	-386.2	-20.3
Ron between others	51	-70.6	-3.7
Exhaustive draws	37	-21.7	-1.1

Luck

Points from luck (/game)+2.1
Draw luck-0.1%
Starting hand (shanten)+0.08
Dora and red fives dealt-0.01
Ura-dora luck+0.08
Ippatsu rate-1.2%
Avoiding a chase riichi (/first riichi)-1.7%
Mangan+ tsumo against dealer rate10.0%

Every number for 2024-25

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.53	2.50 (2.29 to 2.71)	12%	41	19 games
Points per game	-3.0	-0.4 (-8.9 to 8.2)	12%	41	19 games
Points per game, luck removed	-5.1	-0.8 (-8.8 to 7.1)	16%	35	19 games
1st-place rate	21.1%	24.5% (16.2% to 32.9%)	13%	39	19 games
4th-place rate	15.8%	23.7% (15.1% to 32.2%)	14%	72	19 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	24.4%	21.0% (18.4% to 23.6%)	23%	97	238 hands
Deal-in rate	13.4%	11.4% (9.5% to 13.4%)	20%	18	238 hands
Riichi rate	25.2%	23.3% (20.6% to 26.1%)	24%	80	238 hands
Call rate	24.8%	24.4% (20.4% to 28.4%)	78%	49	238 hands
First riichi rate	80.0%	76.5% (72.0% to 81.0%)	12%	75	60 riichi
Average riichi turn	8.37	9.08 (8.65 to 9.51)	26%	97	60 riichi
Average win value	5,471	6,378 (5,813 to 6,942)	19%	7	58 wins
Average deal-in value	5,997	5,662 (5,124 to 6,201)	10%	15	32 deal-ins
Win efficiency	1,469	1,474 (1,368 to 1,580)	3%	55	238 hands
Deal-in loss	824	656 (546 to 766)	9%	21	238 hands
Net efficiency	645	815 (586 to 1,044)	11%	35	238 hands
Push rate vs riichi (1-shanten)	51.2%	42.8% (35.5% to 50.0%)	18%	77	41 hands facing riichi
Push rate vs riichi (2+ shanten)	34.3%	28.0% (20.3% to 35.7%)	28%	80	35 hands facing riichi
Tenpai rate after the first call	28.8%	27.2% (20.4% to 34.0%)	49%	83	59 first calls
Average win turn	12.40	12.38 (12.23 to 12.53)	1%	38	58 wins
Tenpai rate at exhaustive draws	40.5%	40.1% (32.7% to 47.5%)	17%	52	37 exhaustive draws
Staying in vs riichi	10.6%	13.9% (11.9% to 15.9%)	5%	24	104 hands facing an opponent’s riichi
Tile efficiency match rate	80.0%	78.5% (76.7% to 80.4%)	79%	100	1,248 discards
Average ukeire loss (tiles)	0.66	0.79 (0.68 to 0.90)	67%	1	1,215 discards
Breaking shape for value	1.5%	1.7% (1.2% to 2.2%)	57%	26	1,248 discards
Tenpai turn (luck-adjusted)	7.81	8.16 (8.03 to 8.29)	3%	9	53 tenpai hands
Immediate riichi rate	79.3%	74.1% (67.5% to 80.7%)	32%	86	53 tenpai hands
Dama rate	5.2%	9.4% (4.1% to 14.7%)	48%	21	58 wins
Riichi income	1,665	2,490 (1,694 to 3,286)	14%	21	60 riichi
Riichi win rate	45.0%	45.8% (39.2% to 52.3%)	26%	46	60 riichi
Riichi deal-in rate A	16.7%	14.4% (12.5% to 16.3%)	2%	32	60 riichi
Riichi deal-in rate B	15.0%	11.3% (8.7% to 13.9%)	6%	24	60 riichi
Riichi good-wait rate	46.7%	49.2% (43.3% to 55.1%)	17%	38	60 riichi
Riichi exhaustive draw rate	18.3%	19.1% (14.2% to 24.0%)	20%	58	60 riichi
Call income	1,180	549 (96.14 to 1,002)	9%	86	59 calls
Win rate after calling	47.5%	33.1% (27.5% to 38.7%)	19%	100	59 calls
Deal-in rate after calling	11.9%	11.6% (7.7% to 15.5%)	19%	52	59 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	+0.08	100	238 hands
Dora and red fives dealt	-0.01	55	238 hands
Draw luck	-0.1%	46	2,795 tile draws
Ura-dora luck	+0.08	83	27 riichi wins
Ippatsu rate	-1.2%	46	27 riichi wins
Avoiding a chase riichi (/first riichi)	-1.7%	52	48 first riichi
Mangan+ tsumo against dealer rate	10.0%	86	60 tsumo against
Points from luck (/game)	+2.1	72	19 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	11.3%	+874	+919	-45
Wins with calls	11.8%	+504	+382	+122
Dama wins	1.3%	+91	+173	-82
Deal-ins to riichi	5.5%	-387	-360	-27
Deal-ins to open hands	6.7%	-371	-203	-168
Deal-ins to dama	1.3%	-103	-101	-3
Others' tsumo	25.2%	-683	-752	+69
Other (exhaustive draws, etc.)	37.0%	-57	-60	+3
Total (per hand)		-133

2023-24 (18 games · skill estimate -1.3pt/game)

Style

Average win value6,481
Riichi rate23.7%
Deal-in rate11.0%
Win rate20.4%
First riichi rate76.1%
Average riichi turn9.28
Call rate21.2%
Tenpai rate at exhaustive draws40.9%
Staying in vs riichi14.1%
Push rate vs riichi (1-shanten)38.9%
Push rate vs riichi (2+ shanten)26.4%
Tile efficiency match rate77.0%
Tenpai turn (luck-adjusted)8.17
Immediate riichi rate72.7%
Dama rate14.7%

Where the points came from

Own wins+43.0
Deal-ins-20.4
Others' tsumo-30.0
Ron between others-4.1
Exhaustive draws-0.2

Change in expected points per game. Total -11.6pt/game (18 games).

As a table

Hand result	Hands	Total	Per game
Own wins	49	+773.3	+43.0
Deal-ins	25	-366.6	-20.4
Others' tsumo	61	-539.5	-30.0
Ron between others	47	-73.4	-4.1
Exhaustive draws	40	-2.9	-0.2

Luck

Points from luck (/game)+4.5
Draw luck+1.1%
Starting hand (shanten)-0.07
Dora and red fives dealt-0.01
Ura-dora luck+0.03
Ippatsu rate+5.3%
Avoiding a chase riichi (/first riichi)-7.3%
Mangan+ tsumo against dealer rate18.0%

Every number for 2023-24

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.89	2.54 (2.33 to 2.75)	11%	1	18 games
Points per game	-11.4	-1.3 (-10.0 to 7.3)	12%	15	18 games
Points per game, luck removed	-15.9	-2.5 (-10.5 to 5.6)	15%	7	18 games
1st-place rate	16.7%	24.0% (15.5% to 32.5%)	12%	29	18 games
4th-place rate	44.4%	27.4% (18.8% to 36.1%)	13%	4	18 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	22.1%	20.4% (17.8% to 23.1%)	22%	83	222 hands
Deal-in rate	11.3%	11.0% (9.0% to 13.0%)	19%	49	222 hands
Riichi rate	27.0%	23.7% (20.9% to 26.5%)	23%	83	222 hands
Call rate	20.7%	21.2% (17.2% to 25.3%)	77%	32	222 hands
First riichi rate	76.7%	76.1% (71.6% to 80.6%)	12%	58	60 riichi
Average riichi turn	9.13	9.28 (8.85 to 9.71)	26%	60	60 riichi
Average win value	5,929	6,481 (5,891 to 7,071)	17%	9	49 wins
Average deal-in value	5,552	5,620 (5,059 to 6,181)	8%	60	25 deal-ins
Win efficiency	1,473	1,474 (1,368 to 1,581)	3%	43	222 hands
Deal-in loss	651	640 (529 to 751)	9%	58	222 hands
Net efficiency	822	834 (602 to 1,065)	10%	46	222 hands
Push rate vs riichi (1-shanten)	28.1%	38.9% (31.2% to 46.6%)	15%	1	32 hands facing riichi
Push rate vs riichi (2+ shanten)	28.6%	26.4% (18.7% to 34.1%)	28%	60	35 hands facing riichi
Tenpai rate after the first call	28.3%	26.8% (19.4% to 34.1%)	43%	69	46 first calls
Average win turn	11.95	12.37 (12.22 to 12.52)	1%	72	49 wins
Tenpai rate at exhaustive draws	45.0%	40.9% (33.7% to 48.2%)	18%	77	40 exhaustive draws
Staying in vs riichi	15.2%	14.1% (12.1% to 16.1%)	5%	80	105 hands facing an opponent’s riichi
Tile efficiency match rate	78.1%	77.0% (75.1% to 78.8%)	78%	94	1,225 discards
Average ukeire loss (tiles)	0.85	0.92 (0.81 to 1.03)	67%	9	1,183 discards
Breaking shape for value	1.9%	1.9% (1.4% to 2.4%)	56%	46	1,225 discards
Tenpai turn (luck-adjusted)	8.15	8.17 (8.04 to 8.30)	4%	52	60 tenpai hands
Immediate riichi rate	74.8%	72.7% (66.4% to 79.1%)	35%	66	60 tenpai hands
Dama rate	16.3%	14.7% (9.0% to 20.3%)	44%	83	49 wins
Riichi income	990	2,396 (1,600 to 3,192)	14%	1	60 riichi
Riichi win rate	40.0%	44.5% (37.9% to 51.1%)	26%	15	60 riichi
Riichi deal-in rate A	20.0%	14.5% (12.5% to 16.4%)	2%	12	60 riichi
Riichi deal-in rate B	16.7%	11.4% (8.8% to 14.0%)	6%	12	60 riichi
Riichi good-wait rate	41.7%	48.4% (42.5% to 54.3%)	17%	18	60 riichi
Riichi exhaustive draw rate	18.3%	19.1% (14.2% to 24.0%)	20%	52	60 riichi
Call income	841	512 (41.64 to 982)	7%	72	46 calls
Win rate after calling	37.0%	30.9% (24.9% to 36.9%)	15%	92	46 calls
Deal-in rate after calling	8.7%	11.1% (6.9% to 15.3%)	15%	75	46 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	-0.07	1	222 hands
Dora and red fives dealt	-0.01	49	222 hands
Draw luck	+1.1%	100	2,730 tile draws
Ura-dora luck	+0.03	60	24 riichi wins
Ippatsu rate	+5.3%	83	24 riichi wins
Avoiding a chase riichi (/first riichi)	-7.3%	12	46 first riichi
Mangan+ tsumo against dealer rate	18.0%	1	61 tsumo against
Points from luck (/game)	+4.5	83	18 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	10.8%	+836	+919	-83
Wins with calls	7.7%	+403	+382	+20
Dama wins	3.6%	+234	+173	+61
Deal-ins to riichi	6.8%	-483	-360	-123
Deal-ins to open hands	3.6%	-172	-203	+31
Deal-ins to dama	0.9%	-41	-101	+60
Others' tsumo	27.5%	-897	-752	-145
Other (exhaustive draws, etc.)	39.2%	-36	-60	+24
Total (per hand)		-157

2022-23 (25 games · skill estimate 0.9pt/game)

Style

Average win value6,649
Riichi rate23.9%
Deal-in rate11.0%
Win rate19.5%
First riichi rate75.5%
Average riichi turn9.31
Call rate26.7%
Tenpai rate at exhaustive draws41.2%
Staying in vs riichi14.1%
Push rate vs riichi (1-shanten)38.7%
Push rate vs riichi (2+ shanten)26.9%
Tile efficiency match rate74.8%
Tenpai turn (luck-adjusted)8.16
Immediate riichi rate74.2%
Dama rate12.7%

Where the points came from

Own wins+52.5
Deal-ins-20.5
Others' tsumo-26.5
Ron between others-1.3
Exhaustive draws+2.1

Change in expected points per game. Total +6.3pt/game (25 games).

As a table

Hand result	Hands	Total	Per game
Own wins	58	+1312.2	+52.5
Deal-ins	35	-513.7	-20.5
Others' tsumo	79	-661.3	-26.5
Ron between others	62	-31.9	-1.3
Exhaustive draws	82	+51.9	+2.1

Luck

Points from luck (/game)+0.4
Draw luck+0.0%
Starting hand (shanten)+0.10
Dora and red fives dealt+0.04
Ura-dora luck+0.15
Ippatsu rate-10.1%
Avoiding a chase riichi (/first riichi)-2.5%
Mangan+ tsumo against dealer rate19.0%

Every number for 2022-23

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.36	2.48 (2.28 to 2.67)	15%	71	25 games
Points per game	6.0	0.9 (-7.1 to 9.0)	16%	71	25 games
Points per game, luck removed	5.7	1.1 (-6.2 to 8.5)	20%	78	25 games
1st-place rate	36.0%	26.8% (19.0% to 34.7%)	16%	87	25 games
4th-place rate	24.0%	24.7% (16.8% to 32.7%)	17%	57	25 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	18.4%	19.5% (17.2% to 21.9%)	28%	27	316 hands
Deal-in rate	11.1%	11.0% (9.2% to 12.7%)	25%	33	316 hands
Riichi rate	26.6%	23.9% (21.4% to 26.4%)	30%	94	316 hands
Call rate	27.5%	26.7% (23.2% to 30.3%)	83%	84	316 hands
First riichi rate	72.6%	75.5% (71.3% to 79.7%)	16%	20	84 riichi
Average riichi turn	9.26	9.31 (8.93 to 9.69)	33%	55	84 riichi
Average win value	6,898	6,649 (6,084 to 7,213)	19%	62	58 wins
Average deal-in value	5,060	5,566 (5,036 to 6,096)	11%	90	35 deal-ins
Win efficiency	1,447	1,473 (1,370 to 1,577)	4%	36	316 hands
Deal-in loss	598	634 (529 to 738)	12%	49	316 hands
Net efficiency	848	837 (621 to 1,053)	14%	49	316 hands
Push rate vs riichi (1-shanten)	32.8%	38.7% (32.5% to 44.9%)	27%	17	67 hands facing riichi
Push rate vs riichi (2+ shanten)	29.4%	26.9% (20.2% to 33.6%)	36%	74	51 hands facing riichi
Tenpai rate after the first call	27.6%	26.8% (20.8% to 32.8%)	59%	46	87 first calls
Average win turn	12.56	12.38 (12.23 to 12.53)	1%	43	58 wins
Tenpai rate at exhaustive draws	43.9%	41.2% (35.5% to 47.0%)	31%	84	82 exhaustive draws
Staying in vs riichi	14.5%	14.1% (12.2% to 16.0%)	8%	74	165 hands facing an opponent’s riichi
Tile efficiency match rate	75.2%	74.8% (73.2% to 76.4%)	84%	100	1,751 discards
Average ukeire loss (tiles)	0.94	0.98 (0.88 to 1.07)	74%	4	1,685 discards
Breaking shape for value	2.6%	2.4% (2.0% to 2.9%)	65%	90	1,751 discards
Tenpai turn (luck-adjusted)	8.10	8.16 (8.04 to 8.29)	4%	30	72 tenpai hands
Immediate riichi rate	78.1%	74.2% (68.3% to 80.1%)	39%	90	72 tenpai hands
Dama rate	12.1%	12.7% (7.4% to 18.0%)	48%	43	58 wins
Riichi income	2,149	2,536 (1,803 to 3,268)	18%	20	84 riichi
Riichi win rate	36.9%	43.1% (37.2% to 48.9%)	32%	4	84 riichi
Riichi deal-in rate A	14.3%	14.3% (12.5% to 16.2%)	3%	28	84 riichi
Riichi deal-in rate B	9.5%	10.9% (8.4% to 13.4%)	8%	55	84 riichi
Riichi good-wait rate	45.2%	48.8% (43.4% to 54.1%)	22%	20	84 riichi
Riichi exhaustive draw rate	21.4%	19.8% (15.4% to 24.2%)	26%	65	84 riichi
Call income	523	491 (69.88 to 912)	13%	55	87 calls
Win rate after calling	23.0%	28.1% (23.1% to 33.1%)	25%	4	87 calls
Deal-in rate after calling	8.0%	10.6% (7.1% to 14.1%)	25%	78	87 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	+0.10	87	316 hands
Dora and red fives dealt	+0.04	74	316 hands
Draw luck	+0.0%	52	4,010 tile draws
Ura-dora luck	+0.15	94	31 riichi wins
Ippatsu rate	-10.1%	11	31 riichi wins
Avoiding a chase riichi (/first riichi)	-2.5%	20	61 first riichi
Mangan+ tsumo against dealer rate	19.0%	4	79 tsumo against
Points from luck (/game)	+0.4	49	25 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	9.8%	+916	+919	-3
Wins with calls	6.3%	+412	+382	+30
Dama wins	2.2%	+118	+173	-55
Deal-ins to riichi	5.4%	-370	-360	-10
Deal-ins to open hands	4.4%	-175	-203	+28
Deal-ins to dama	1.3%	-79	-101	+22
Others' tsumo	25.0%	-705	-752	+47
Other (exhaustive draws, etc.)	45.6%	-6	-60	+53
Total (per hand)		+111

2021-22 (18 games · skill estimate -0.9pt/game)

Style

Average win value6,613
Riichi rate22.6%
Deal-in rate11.0%
Win rate19.2%
First riichi rate75.0%
Average riichi turn9.42
Call rate17.8%
Tenpai rate at exhaustive draws38.5%
Staying in vs riichi14.2%
Push rate vs riichi (1-shanten)40.6%
Push rate vs riichi (2+ shanten)27.5%
Tile efficiency match rate75.4%
Tenpai turn (luck-adjusted)8.18
Immediate riichi rate71.8%
Dama rate12.5%

Where the points came from

Own wins+41.5
Deal-ins-18.0
Others' tsumo-26.6
Ron between others-1.3
Exhaustive draws-3.0

Change in expected points per game. Total -7.4pt/game (18 games).

As a table

Hand result	Hands	Total	Per game
Own wins	36	+746.4	+41.5
Deal-ins	25	-324.3	-18.0
Others' tsumo	58	-479.0	-26.6
Ron between others	52	-23.0	-1.3
Exhaustive draws	51	-54.0	-3.0

Luck

Points from luck (/game)+1.9
Draw luck-0.5%
Starting hand (shanten)-0.08
Dora and red fives dealt+0.10
Ura-dora luck+0.07
Ippatsu rate-0.7%
Avoiding a chase riichi (/first riichi)-2.8%
Mangan+ tsumo against dealer rate17.2%

Every number for 2021-22

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.72	2.52 (2.31 to 2.73)	11%	33	18 games
Points per game	-7.8	-0.9 (-9.6 to 7.8)	12%	33	18 games
Points per game, luck removed	-9.7	-1.5 (-9.6 to 6.6)	15%	20	18 games
1st-place rate	27.8%	25.4% (16.9% to 33.9%)	12%	62	18 games
4th-place rate	33.3%	26.0% (17.4% to 34.6%)	13%	20	18 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	16.2%	19.2% (16.5% to 21.8%)	22%	17	222 hands
Deal-in rate	11.3%	11.0% (9.0% to 13.0%)	19%	30	222 hands
Riichi rate	22.1%	22.6% (19.8% to 25.4%)	23%	43	222 hands
Call rate	16.2%	17.8% (13.7% to 21.8%)	77%	17	222 hands
First riichi rate	65.3%	75.0% (70.3% to 79.6%)	10%	14	49 riichi
Average riichi turn	9.69	9.42 (8.96 to 9.87)	22%	49	49 riichi
Average win value	6,769	6,613 (5,980 to 7,246)	13%	58	36 wins
Average deal-in value	5,344	5,604 (5,043 to 6,164)	8%	55	25 deal-ins
Win efficiency	1,262	1,469 (1,362 to 1,575)	3%	20	222 hands
Deal-in loss	623	637 (526 to 749)	9%	49	222 hands
Net efficiency	638	815 (584 to 1,047)	10%	27	222 hands
Push rate vs riichi (1-shanten)	39.6%	40.6% (33.7% to 47.5%)	21%	52	48 hands facing riichi
Push rate vs riichi (2+ shanten)	31.7%	27.5% (20.2% to 34.7%)	31%	84	41 hands facing riichi
Tenpai rate after the first call	27.8%	26.4% (18.4% to 34.5%)	37%	49	36 first calls
Average win turn	13.54	12.39 (12.24 to 12.54)	1%	4	36 wins
Tenpai rate at exhaustive draws	33.3%	38.5% (31.8% to 45.3%)	22%	23	51 exhaustive draws
Staying in vs riichi	17.2%	14.2% (12.3% to 16.2%)	5%	87	116 hands facing an opponent’s riichi
Tile efficiency match rate	76.1%	75.4% (73.5% to 77.2%)	79%	100	1,233 discards
Average ukeire loss (tiles)	0.88	0.94 (0.83 to 1.05)	67%	4	1,182 discards
Breaking shape for value	2.6%	2.3% (1.8% to 2.8%)	56%	90	1,233 discards
Tenpai turn (luck-adjusted)	8.55	8.18 (8.05 to 8.31)	3%	84	51 tenpai hands
Immediate riichi rate	72.0%	71.8% (65.0% to 78.5%)	31%	49	51 tenpai hands
Dama rate	11.1%	12.5% (6.3% to 18.8%)	37%	31	36 wins
Riichi income	2,200	2,574 (1,743 to 3,404)	12%	27	49 riichi
Riichi win rate	42.9%	45.3% (38.3% to 52.3%)	22%	27	49 riichi
Riichi deal-in rate A	14.3%	14.3% (12.4% to 16.3%)	2%	33	49 riichi
Riichi deal-in rate B	10.2%	11.0% (8.3% to 13.7%)	5%	43	49 riichi
Riichi good-wait rate	51.0%	49.9% (43.7% to 56.1%)	14%	52	49 riichi
Riichi exhaustive draw rate	20.4%	19.5% (14.3% to 24.6%)	17%	58	49 riichi
Call income	681	498 (11.83 to 983)	6%	65	36 calls
Win rate after calling	30.6%	29.9% (23.6% to 36.2%)	12%	55	36 calls
Deal-in rate after calling	11.1%	11.5% (7.0% to 15.9%)	12%	52	36 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	-0.08	11	222 hands
Dora and red fives dealt	+0.10	100	222 hands
Draw luck	-0.5%	30	2,830 tile draws
Ura-dora luck	+0.07	71	21 riichi wins
Ippatsu rate	-0.7%	52	21 riichi wins
Avoiding a chase riichi (/first riichi)	-2.8%	23	32 first riichi
Mangan+ tsumo against dealer rate	17.2%	17	58 tsumo against
Points from luck (/game)	+1.9	78	18 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	9.5%	+892	+919	-27
Wins with calls	5.0%	+319	+382	-63
Dama wins	1.8%	+50	+173	-122
Deal-ins to riichi	5.4%	-397	-360	-37
Deal-ins to open hands	3.2%	-100	-203	+104
Deal-ins to dama	2.7%	-149	-101	-48
Others' tsumo	26.1%	-831	-752	-78
Other (exhaustive draws, etc.)	46.4%	-99	-60	-39
Total (per hand)		-314

2020-21 (26 games · skill estimate 2.9pt/game)

Style

Average win value6,362
Riichi rate21.9%
Deal-in rate11.0%
Win rate22.2%
First riichi rate76.7%
Average riichi turn9.29
Call rate26.3%
Tenpai rate at exhaustive draws38.9%
Staying in vs riichi14.2%
Push rate vs riichi (1-shanten)41.1%
Push rate vs riichi (2+ shanten)26.0%
Tile efficiency match rate75.0%
Tenpai turn (luck-adjusted)8.16
Immediate riichi rate69.5%
Dama rate14.5%

Where the points came from

Own wins+60.9
Deal-ins-20.7
Others' tsumo-20.1
Ron between others-1.5
Exhaustive draws-0.4

Change in expected points per game. Total +18.2pt/game (26 games).

As a table

Hand result	Hands	Total	Per game
Own wins	85	+1582.9	+60.9
Deal-ins	34	-538.9	-20.7
Others' tsumo	62	-523.2	-20.1
Ron between others	64	-38.1	-1.5
Exhaustive draws	59	-9.5	-0.4

Luck

Points from luck (/game)+5.9
Draw luck-0.1%
Starting hand (shanten)+0.05
Dora and red fives dealt+0.00
Ura-dora luck+0.20
Ippatsu rate-5.9%
Avoiding a chase riichi (/first riichi)+2.9%
Mangan+ tsumo against dealer rate16.1%

Every number for 2020-21

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.12	2.44 (2.24 to 2.63)	15%	97	26 games
Points per game	18.0	2.9 (-5.1 to 10.9)	16%	97	26 games
Points per game, luck removed	12.1	2.5 (-4.8 to 9.8)	21%	100	26 games
1st-place rate	46.2%	28.6% (20.8% to 36.4%)	17%	100	26 games
4th-place rate	19.2%	23.9% (16.0% to 31.8%)	18%	76	26 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	28.0%	22.2% (19.8% to 24.6%)	28%	100	304 hands
Deal-in rate	11.2%	11.0% (9.2% to 12.8%)	24%	39	304 hands
Riichi rate	19.7%	21.9% (19.3% to 24.4%)	29%	18	304 hands
Call rate	27.0%	26.3% (22.7% to 29.9%)	82%	90	304 hands
First riichi rate	81.7%	76.7% (72.2% to 81.2%)	12%	80	60 riichi
Average riichi turn	9.15	9.29 (8.86 to 9.72)	26%	66	60 riichi
Average win value	5,696	6,362 (5,860 to 6,864)	26%	4	85 wins
Average deal-in value	5,241	5,586 (5,053 to 6,119)	10%	66	34 deal-ins
Win efficiency	1,832	1,486 (1,382 to 1,590)	3%	93	304 hands
Deal-in loss	602	635 (529 to 740)	12%	66	304 hands
Net efficiency	1,230	888 (670 to 1,105)	13%	90	304 hands
Push rate vs riichi (1-shanten)	41.9%	41.1% (34.7% to 47.5%)	25%	59	62 hands facing riichi
Push rate vs riichi (2+ shanten)	26.8%	26.0% (19.5% to 32.5%)	38%	69	56 hands facing riichi
Tenpai rate after the first call	30.5%	28.4% (22.3% to 34.5%)	57%	66	82 first calls
Average win turn	12.50	12.38 (12.24 to 12.53)	2%	39	85 wins
Tenpai rate at exhaustive draws	35.6%	38.9% (32.5% to 45.4%)	25%	27	59 exhaustive draws
Staying in vs riichi	16.4%	14.2% (12.3% to 16.1%)	7%	93	159 hands facing an opponent’s riichi
Tile efficiency match rate	75.4%	75.0% (73.3% to 76.6%)	83%	93	1,666 discards
Average ukeire loss (tiles)	1.04	1.05 (0.95 to 1.15)	73%	18	1,596 discards
Breaking shape for value	2.4%	2.3% (1.8% to 2.7%)	64%	76	1,666 discards
Tenpai turn (luck-adjusted)	7.99	8.16 (8.03 to 8.29)	4%	18	65 tenpai hands
Immediate riichi rate	65.7%	69.5% (63.3% to 75.6%)	37%	18	65 tenpai hands
Dama rate	15.3%	14.5% (9.8% to 19.2%)	58%	62	85 wins
Riichi income	3,542	2,751 (1,955 to 3,547)	14%	80	60 riichi
Riichi win rate	60.0%	49.6% (43.0% to 56.2%)	26%	93	60 riichi
Riichi deal-in rate A	15.0%	14.3% (12.4% to 16.2%)	2%	50	60 riichi
Riichi deal-in rate B	11.7%	11.1% (8.5% to 13.7%)	6%	52	60 riichi
Riichi good-wait rate	48.3%	49.5% (43.6% to 55.4%)	17%	42	60 riichi
Riichi exhaustive draw rate	16.7%	18.7% (13.8% to 23.6%)	20%	30	60 riichi
Call income	1,587	620 (193 to 1,046)	12%	100	82 calls
Win rate after calling	43.9%	33.2% (28.1% to 38.3%)	24%	100	82 calls
Deal-in rate after calling	8.5%	10.8% (7.2% to 14.4%)	24%	80	82 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	+0.05	80	304 hands
Dora and red fives dealt	+0.00	39	304 hands
Draw luck	-0.1%	59	3,695 tile draws
Ura-dora luck	+0.20	97	36 riichi wins
Ippatsu rate	-5.9%	23	36 riichi wins
Avoiding a chase riichi (/first riichi)	+2.9%	42	49 first riichi
Mangan+ tsumo against dealer rate	16.1%	21	62 tsumo against
Points from luck (/game)	+5.9	93	26 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	11.8%	+916	+919	-3
Wins with calls	11.8%	+610	+382	+228
Dama wins	4.3%	+306	+173	+133
Deal-ins to riichi	5.3%	-399	-360	-39
Deal-ins to open hands	3.6%	-120	-203	+83
Deal-ins to dama	2.3%	-106	-101	-5
Others' tsumo	20.4%	-606	-752	+147
Other (exhaustive draws, etc.)	40.5%	-46	-60	+14
Total (per hand)		+555

2019-20 (30 games · skill estimate -0.2pt/game)

Style

Average win value6,703
Riichi rate22.4%
Deal-in rate11.4%
Win rate19.6%
First riichi rate74.9%
Average riichi turn9.13
Call rate21.2%
Tenpai rate at exhaustive draws38.8%
Staying in vs riichi14.1%
Push rate vs riichi (1-shanten)42.1%
Push rate vs riichi (2+ shanten)23.8%
Tile efficiency match rate72.8%
Tenpai turn (luck-adjusted)8.18
Immediate riichi rate73.0%
Dama rate13.9%

Where the points came from

Own wins+48.6
Deal-ins-19.9
Others' tsumo-24.9
Ron between others-4.4
Exhaustive draws-0.3

Change in expected points per game. Total -0.8pt/game (30 games).

As a table

Hand result	Hands	Total	Per game
Own wins	69	+1458.7	+48.6
Deal-ins	47	-596.3	-19.9
Others' tsumo	103	-745.9	-24.9
Ron between others	67	-131.2	-4.4
Exhaustive draws	83	-9.6	-0.3

Luck

Points from luck (/game)-2.7
Draw luck-0.2%
Starting hand (shanten)-0.06
Dora and red fives dealt+0.06
Ura-dora luck+0.03
Ippatsu rate-7.2%
Avoiding a chase riichi (/first riichi)-0.1%
Mangan+ tsumo against dealer rate12.6%

Every number for 2019-20

Results
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Average placement	2.50	2.50 (2.31 to 2.69)	17%	58	30 games
Points per game	-1.1	-0.2 (-7.9 to 7.5)	18%	50	30 games
Points per game, luck removed	1.6	0.4 (-6.6 to 7.4)	23%	72	30 games
1st-place rate	26.7%	25.4% (17.9% to 32.9%)	19%	54	30 games
4th-place rate	26.7%	25.3% (17.7% to 32.9%)	20%	54	30 games

Style
Metric	Actual	Estimate (90% interval)	Weight of the record	Percentile	Count
Win rate	18.7%	19.6% (17.3% to 21.8%)	32%	40	369 hands
Deal-in rate	12.7%	11.4% (9.7% to 13.1%)	28%	12	369 hands
Riichi rate	21.7%	22.4% (20.0% to 24.7%)	33%	43	369 hands
Call rate	20.9%	21.2% (17.9% to 24.5%)	85%	54	369 hands
First riichi rate	68.8%	74.9% (70.7% to 79.1%)	15%	12	80 riichi
Average riichi turn	8.70	9.13 (8.74 to 9.52)	32%	96	80 riichi
Average win value	7,107	6,703 (6,166 to 7,240)	22%	79	69 wins
Average deal-in value	5,221	5,570 (5,071 to 6,069)	14%	89	47 deal-ins
Win efficiency	1,477	1,474 (1,372 to 1,576)	4%	65	369 hands
Deal-in loss	698	647 (546 to 748)	14%	40	369 hands
Net efficiency	779	826 (618 to 1,035)	16%	50	369 hands
Push rate vs riichi (1-shanten)	46.3%	42.1% (35.4% to 48.8%)	23%	75	54 hands facing riichi
Push rate vs riichi (2+ shanten)	21.8%	23.8% (18.0% to 29.6%)	46%	33	78 hands facing riichi
Tenpai rate after the first call	29.9%	28.0% (21.8% to 34.2%)	56%	50	77 first calls
Average win turn	12.02	12.37 (12.23 to 12.52)	2%	72	69 wins
Tenpai rate at exhaustive draws	36.1%	38.8% (33.1% to 44.5%)	32%	22	83 exhaustive draws
Staying in vs riichi	14.5%	14.1% (12.3% to 15.9%)	9%	61	193 hands facing an opponent’s riichi
Tile efficiency match rate	72.8%	72.8% (71.3% to 74.3%)	86%	79	1,990 discards
Average ukeire loss (tiles)	1.06	1.06 (0.97 to 1.16)	76%	40	1,915 discards
Breaking shape for value	2.1%	2.1% (1.7% to 2.5%)	68%	58	1,990 discards
Tenpai turn (luck-adjusted)	8.38	8.18 (8.05 to 8.30)	5%	79	83 tenpai hands
Immediate riichi rate	74.9%	73.0% (67.4% to 78.7%)	43%	72	83 tenpai hands
Dama rate	14.5%	13.9% (8.9% to 19.0%)	53%	36	69 wins
Riichi income	2,424	2,588 (1,845 to 3,330)	18%	43	80 riichi
Riichi win rate	40.0%	44.1% (38.2% to 50.1%)	31%	26	80 riichi
Riichi deal-in rate A	16.3%	14.4% (12.5% to 16.2%)	3%	15	80 riichi
Riichi deal-in rate B	10.0%	11.0% (8.5% to 13.5%)	8%	68	80 riichi
Riichi good-wait rate	58.8%	51.6% (46.2% to 57.1%)	21%	96	80 riichi
Riichi exhaustive draw rate	25.0%	20.7% (16.2% to 25.2%)	25%	82	80 riichi
Call income	449	482 (50.44 to 914)	11%	36	77 calls
Win rate after calling	35.1%	31.0% (25.8% to 36.2%)	23%	86	77 calls
Deal-in rate after calling	16.9%	12.8% (9.1% to 16.4%)	23%	5	77 calls

Luck (difference from the league average)
Metric	Actual	Percentile	Count
Starting hand (shanten)	-0.06	33	369 hands
Dora and red fives dealt	+0.06	93	369 hands
Draw luck	-0.2%	15	4,457 tile draws
Ura-dora luck	+0.03	40	32 riichi wins
Ippatsu rate	-7.2%	12	32 riichi wins
Avoiding a chase riichi (/first riichi)	-0.1%	50	55 first riichi
Mangan+ tsumo against dealer rate	12.6%	50	103 tsumo against
Points from luck (/game)	-2.7	40	30 games

Hand balance breakdown
Category	Frequency	Balance per hand	League average	Difference
Wins with riichi	8.7%	+773	+919	-146
Wins with calls	7.3%	+512	+382	+129
Dama wins	2.7%	+193	+173	+20
Deal-ins to riichi	7.0%	-455	-360	-95
Deal-ins to open hands	3.3%	-108	-203	+95
Deal-ins to dama	2.4%	-157	-101	-56
Others' tsumo	27.9%	-782	-752	-29
Other (exhaustive draws, etc.)	40.6%	-95	-60	-35
Total (per hand)		-120

Columns about this player

Are Uchikawa Kotaro's deal-ins expensive? (Japanese)The legendary suuankou tanki and a dealer's daisangen in the first hand: are the two yakuman deal-ins replayed so often what Uchikawa Kotaro's mahjong is like? In the records, his deal-in values are at the league average.

Players with a similar styleclosest career style metrics first

Kazuma IshiiEARTH JETSIn common: Smaller hands, Efficiency first, Early riichi
Hiroe SugawaraFormer M.League playerIn common: Efficiency first
Sayaka OkadaKADOKAWA Sakura KnightsIn common: Efficiency first

* Twelve style metrics, including call rate, riichi rate, win rate, deal-in rate, hand value, riichi speed and immediate riichi rate, are put on the same scale and compared; the players closest overall are listed. Metrics supported more strongly by the data receive more weight. The comparison shows how similar the players' styles are, not which is better. Differences are often small, so the order may change.