Player · 38 career games · 2019-20–2020-21
Wakutsu Akira
Too little data yet to pin down the style. Career record: -10.5pt per game, but allowing for luck the difference from average is not clear yet.
Actual / game
-10.5
38 career games
Skill estimate / game
-0.9
90% interval -6.2 to +4.4
Estimate, luck removed
-1.2
adjusted for starting hands, draws, ura-dora
Weight of the record
9%
share of the estimate from the record
Styleleague percentile, career
Colour only for metrics with a good side (red = good, blue = bad). Metrics of style, such as riichi rate, call rate and efficiency match rate, are grey. For tenpai turn, further right means later (a larger turn number). Values are estimates.
Placements38 career games, average placement 2.74
- 1st23.7%9×
- 2nd18.4%7×
- 3rd18.4%7×
- 4th39.5%15×
Riichi and callsbalance and outcome of hands with riichi or calls
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
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
Luckfurther right is luckier; values are differences from the league average (the dealer tsumo rate is the rate itself)
Where the points came fromchange in expected points, all stages
As a table
| Hand result | Hands | Total | Per game |
|---|---|---|---|
| Own wins | 77 | +1390.9 | +36.6 |
| Deal-ins | 56 | -845.1 | -22.2 |
| Others' tsumo | 124 | -912.7 | -24.0 |
| Ron between others | 93 | -51.1 | -1.3 |
| Draws | 93 | +23.1 | +0.6 |
Hand balance breakdownpoints won or lost per hand, all stages
| Category | Frequency | Balance per hand | League average | Difference |
|---|---|---|---|---|
| Wins with riichi | 8.6% | +765 | +924 | -159 |
| Wins with calls | 4.1% | +235 | +381 | -147 |
| Dama wins | 4.7% | +246 | +175 | +71 |
| Deal-ins to riichi | 5.2% | -482 | -361 | -121 |
| Deal-ins to open hands | 5.0% | -242 | -203 | -39 |
| Deal-ins to dama | 2.5% | -142 | -102 | -40 |
| Others' tsumo | 28.0% | -788 | -757 | -31 |
| Other (draws etc.) | 42.0% | -65 | -59 | -6 |
| Total (per hand) | -475 |
Every career number (estimate, 90% interval, weight of the record)
| Metric | Actual | Estimate (90% interval) | Weight of the record | Percentile | Count |
|---|---|---|---|---|---|
| Average placement | 2.74 | 2.51 (2.39 to 2.64) | 7% | — | 38 games |
| Points per game | -10.5 | -0.9 (-6.2 to 4.4) | 9% | — | 38 games |
| Points per game, luck removed | -10.5 | -1.2 (-6.2 to 3.8) | 11% | — | 38 games |
| 1st-place rate | 23.7% | 25.0% (22.0% to 28.1%) | 2% | — | 38 games |
| 4th-place rate | 39.5% | 27.1% (20.9% to 33.2%) | 15% | — | 38 games |
| Metric | Actual | Estimate (90% interval) | Weight of the record | Percentile | Count |
|---|---|---|---|---|---|
| Win rate | 17.4% | 19.2% (17.2% to 21.2%) | 29% | — | 443 hands |
| Deal-in rate | 12.6% | 11.4% (9.9% to 13.0%) | 30% | — | 443 hands |
| Riichi rate | 19.0% | 21.1% (18.8% to 23.4%) | 43% | — | 443 hands |
| Call rate | 16.3% | 17.1% (14.0% to 20.1%) | 88% | — | 443 hands |
| First riichi rate | 81.0% | 77.0% (72.6% to 81.3%) | 19% | — | 84 riichi |
| Average riichi turn | 9.06 | 9.28 (8.93 to 9.63) | 23% | — | 84 riichi |
| Average win value | 6,422 | 6,570 (6,058 to 7,083) | 22% | — | 77 wins |
| Average deal-in value | 6,427 | 5,763 (5,290 to 6,236) | 15% | — | 56 deal-ins |
| Win efficiency | 1,245 | 1,480 (1,425 to 1,536) | 0% | — | 443 hands |
| Deal-in loss | 842 | 676 (577 to 776) | 18% | — | 443 hands |
| Net efficiency | 404 | 782 (601 to 963) | 13% | — | 443 hands |
| Push rate vs riichi (1-shanten) | 30.4% | 37.5% (31.2% to 43.8%) | 31% | — | 69 hands facing riichi |
| Push rate vs riichi (2+ shanten) | 29.7% | 27.5% (22.1% to 32.9%) | 46% | — | 91 hands facing riichi |
| Tenpai rate after the first call | 30.6% | 28.4% (22.0% to 34.8%) | 55% | — | 72 first calls |
| Average win turn | 12.23 | 12.37 (12.10 to 12.65) | 9% | — | 77 wins |
| Tenpai rate at draws | 31.2% | 37.3% (31.9% to 42.7%) | 31% | — | 93 draws |
| Staying in vs riichi | 11.0% | 13.9% (12.4% to 15.3%) | 5% | — | 218 hands facing riichi |
| Efficiency match rate | 71.4% | 71.6% (70.2% to 73.0%) | 88% | — | 2,433 discards |
| Average ukeire loss (tiles) | 1.10 | 1.09 (1.01 to 1.18) | 80% | — | 2,324 discards |
| Breaking shape for value | 2.2% | 2.1% (1.7% to 2.5%) | 69% | — | 2,433 discards |
| Tenpai turn (luck-adjusted) | 8.28 | 8.18 (8.05 to 8.32) | 8% | — | 99 tenpai hands |
| Immediate riichi rate | 58.9% | 64.9% (59.4% to 70.4%) | 51% | — | 99 tenpai hands |
| Dama rate | 27.3% | 21.3% (16.4% to 26.2%) | 56% | — | 77 wins |
| Riichi income | 1,775 | 2,482 (1,748 to 3,215) | 18% | — | 84 riichi |
| Riichi win rate | 45.2% | 45.9% (40.1% to 51.6%) | 30% | — | 84 riichi |
| Riichi deal-in rate A | 19.0% | 14.4% (13.2% to 15.5%) | 1% | — | 84 riichi |
| Riichi deal-in rate B | 13.1% | 11.1% (9.4% to 12.9%) | 4% | — | 84 riichi |
| Riichi good-wait rate | 60.7% | 52.6% (47.0% to 58.2%) | 26% | — | 84 riichi |
| Riichi draw rate | 13.1% | 17.5% (13.0% to 21.9%) | 28% | — | 84 riichi |
| Call income | -12.50 | 449 (71.90 to 827) | 7% | — | 72 calls |
| Win rate after calling | 25.0% | 28.9% (23.9% to 34.0%) | 18% | — | 72 calls |
| Deal-in rate after calling | 15.3% | 12.3% (8.7% to 16.0%) | 21% | — | 72 calls |
| Metric | Actual | Percentile | Count |
|---|---|---|---|
| Starting hand (shanten) | +0.04 | — | 443 hands |
| Dora and red fives dealt | -0.01 | — | 443 hands |
| Draw luck | +0.3% | — | 5,475 draws |
| Ura-dora luck | -0.06 | — | 38 riichi wins |
| Ippatsu rate | +1.3% | — | 38 riichi wins |
| Not being chased (/first riichi) | -1.2% | — | 68 first riichi |
| Painful dealer tsumo rate | 16.1% | — | 124 tsumo against |
| Points from luck (/game) | +0.0 | — | 38 games |
By seasonRegular Season
2020-21 (19 games · skill estimate -0.7pt/game)
Style
Where the points came from
As a table
| Hand result | Hands | Total | Per game |
|---|---|---|---|
| Own wins | 31 | +637.4 | +33.5 |
| Deal-ins | 25 | -410.5 | -21.6 |
| Others' tsumo | 64 | -504.2 | -26.5 |
| Ron between others | 49 | -31.8 | -1.7 |
| Draws | 48 | +33.5 | +1.8 |
Luck
Every number for 2020-21
| Metric | Actual | Estimate (90% interval) | Weight of the record | Percentile | Count |
|---|---|---|---|---|---|
| Average placement | 2.89 | 2.51 (2.38 to 2.65) | 4% | 4 | 19 games |
| Points per game | -14.8 | -0.7 (-6.5 to 5.2) | 4% | 8 | 19 games |
| Points per game, luck removed | -12.3 | -0.7 (-6.3 to 4.9) | 6% | 11 | 19 games |
| 1st-place rate | 21.1% | 25.0% (21.8% to 28.2%) | 1% | 40 | 19 games |
| 4th-place rate | 42.1% | 26.3% (19.2% to 33.3%) | 8% | 4 | 19 games |
| Metric | Actual | Estimate (90% interval) | Weight of the record | Percentile | Count |
|---|---|---|---|---|---|
| Win rate | 14.3% | 19.0% (16.6% to 21.5%) | 17% | 4 | 217 hands |
| Deal-in rate | 11.5% | 11.0% (9.1% to 13.0%) | 17% | 32 | 217 hands |
| Riichi rate | 17.1% | 21.2% (18.3% to 24.2%) | 27% | 1 | 217 hands |
| Call rate | 18.9% | 19.8% (15.7% to 23.9%) | 77% | 45 | 217 hands |
| First riichi rate | 78.4% | 76.2% (71.0% to 81.5%) | 9% | 45 | 37 riichi |
| Average riichi turn | 9.57 | 9.37 (8.94 to 9.80) | 12% | 39 | 37 riichi |
| Average win value | 7,610 | 6,716 (6,078 to 7,354) | 10% | 83 | 31 wins |
| Average deal-in value | 6,912 | 5,738 (5,188 to 6,288) | 7% | 15 | 25 deal-ins |
| Win efficiency | 1,177 | 1,480 (1,423 to 1,537) | 0% | 50 | 217 hands |
| Deal-in loss | 813 | 657 (541 to 773) | 10% | 21 | 217 hands |
| Net efficiency | 364 | 806 (602 to 1,011) | 7% | 15 | 217 hands |
| Push rate vs riichi (1-shanten) | 18.8% | 36.9% (28.9% to 44.9%) | 17% | 1 | 32 hands facing riichi |
| Push rate vs riichi (2+ shanten) | 36.0% | 29.0% (22.3% to 35.6%) | 32% | 97 | 50 hands facing riichi |
| Tenpai rate after the first call | 26.8% | 26.2% (18.4% to 33.9%) | 41% | 39 | 41 first calls |
| Average win turn | 11.69 | 12.36 (12.05 to 12.67) | 4% | 86 | 31 wins |
| Tenpai rate at draws | 37.5% | 39.5% (32.9% to 46.2%) | 19% | 39 | 48 draws |
| Staying in vs riichi | 11.6% | 13.9% (12.4% to 15.5%) | 3% | 25 | 112 hands facing riichi |
| Efficiency match rate | 72.0% | 72.2% (70.3% to 74.1%) | 78% | 52 | 1,175 discards |
| Average ukeire loss (tiles) | 1.05 | 1.06 (0.94 to 1.17) | 66% | 25 | 1,124 discards |
| Breaking shape for value | 2.1% | 2.1% (1.6% to 2.6%) | 52% | 59 | 1,175 discards |
| Tenpai turn (luck-adjusted) | 8.48 | 8.18 (8.03 to 8.34) | 3% | 59 | 41 tenpai hands |
| Immediate riichi rate | 60.0% | 67.9% (60.4% to 75.3%) | 31% | 15 | 41 tenpai hands |
| Dama rate | 25.8% | 17.7% (11.1% to 24.4%) | 34% | 83 | 31 wins |
| Riichi income | 562 | 2,454 (1,580 to 3,327) | 9% | 4 | 37 riichi |
| Riichi win rate | 35.1% | 44.4% (37.0% to 51.8%) | 16% | 21 | 37 riichi |
| Riichi deal-in rate A | 24.3% | 14.4% (13.2% to 15.6%) | 0% | 4 | 37 riichi |
| Riichi deal-in rate B | 16.2% | 11.1% (9.3% to 13.0%) | 2% | 25 | 37 riichi |
| Riichi good-wait rate | 64.9% | 51.8% (44.8% to 58.8%) | 13% | 90 | 37 riichi |
| Riichi draw rate | 13.5% | 18.3% (12.6% to 24.0%) | 15% | 21 | 37 riichi |
| Call income | 180 | 472 (68.47 to 876) | 4% | 35 | 41 calls |
| Win rate after calling | 24.4% | 29.2% (23.5% to 34.9%) | 11% | 32 | 41 calls |
| Deal-in rate after calling | 12.2% | 11.6% (7.4% to 15.9%) | 13% | 49 | 41 calls |
| Metric | Actual | Percentile | Count |
|---|---|---|---|
| Starting hand (shanten) | -0.04 | 18 | 217 hands |
| Dora and red fives dealt | -0.04 | 18 | 217 hands |
| Draw luck | -0.3% | 49 | 2,738 draws |
| Ura-dora luck | +0.08 | 73 | 13 riichi wins |
| Ippatsu rate | +3.3% | 73 | 13 riichi wins |
| Not being chased (/first riichi) | +4.6% | 69 | 29 first riichi |
| Painful dealer tsumo rate | 18.8% | 4 | 64 tsumo against |
| Points from luck (/game) | -2.4 | 32 | 19 games |
| Category | Frequency | Balance per hand | League average | Difference |
|---|---|---|---|---|
| Wins with riichi | 6.0% | +621 | +924 | -303 |
| Wins with calls | 4.6% | +276 | +381 | -106 |
| Dama wins | 3.7% | +281 | +175 | +105 |
| Deal-ins to riichi | 5.1% | -553 | -361 | -192 |
| Deal-ins to open hands | 3.7% | -143 | -203 | +60 |
| Deal-ins to dama | 2.8% | -144 | -102 | -42 |
| Others' tsumo | 29.5% | -845 | -757 | -88 |
| Other (draws etc.) | 44.7% | -35 | -59 | +25 |
| Total (per hand) | -543 |
2019-20 (15 games · skill estimate -0.3pt/game)
Style
Where the points came from
As a table
| Hand result | Hands | Total | Per game |
|---|---|---|---|
| Own wins | 33 | +562.3 | +37.5 |
| Deal-ins | 26 | -381.5 | -25.4 |
| Others' tsumo | 50 | -298.6 | -19.9 |
| Ron between others | 35 | -14.4 | -1.0 |
| Draws | 33 | +0.2 | 0.0 |
Luck
Every number for 2019-20
| Metric | Actual | Estimate (90% interval) | Weight of the record | Percentile | Count |
|---|---|---|---|---|---|
| Average placement | 2.60 | 2.50 (2.36 to 2.64) | 3% | 47 | 15 games |
| Points per game | -8.7 | -0.3 (-6.3 to 5.7) | 4% | 36 | 15 games |
| Points per game, luck removed | -5.1 | -0.2 (-6.0 to 5.5) | 5% | 43 | 15 games |
| 1st-place rate | 26.7% | 25.1% (21.9% to 28.3%) | 1% | 50 | 15 games |
| 4th-place rate | 40.0% | 25.9% (18.6% to 33.2%) | 6% | 8 | 15 games |
| Metric | Actual | Estimate (90% interval) | Weight of the record | Percentile | Count |
|---|---|---|---|---|---|
| Win rate | 18.6% | 19.8% (17.2% to 22.4%) | 14% | 54 | 177 hands |
| Deal-in rate | 14.7% | 11.5% (9.4% to 13.5%) | 14% | 5 | 177 hands |
| Riichi rate | 21.5% | 22.4% (19.3% to 25.6%) | 23% | 58 | 177 hands |
| Call rate | 14.7% | 16.8% (12.4% to 21.3%) | 74% | 26 | 177 hands |
| First riichi rate | 81.6% | 76.6% (71.3% to 81.8%) | 9% | 43 | 38 riichi |
| Average riichi turn | 8.74 | 9.27 (8.84 to 9.70) | 12% | 86 | 38 riichi |
| Average win value | 5,861 | 6,530 (5,900 to 7,161) | 11% | 19 | 33 wins |
| Average deal-in value | 6,412 | 5,703 (5,156 to 6,249) | 8% | 26 | 26 deal-ins |
| Win efficiency | 1,227 | 1,480 (1,423 to 1,538) | 0% | 50 | 177 hands |
| Deal-in loss | 971 | 667 (547 to 787) | 8% | 5 | 177 hands |
| Net efficiency | 256 | 806 (596 to 1,016) | 6% | 1 | 177 hands |
| Push rate vs riichi (1-shanten) | 44.8% | 41.3% (33.1% to 49.5%) | 16% | 61 | 29 hands facing riichi |
| Push rate vs riichi (2+ shanten) | 23.5% | 25.1% (17.5% to 32.7%) | 24% | 58 | 34 hands facing riichi |
| Tenpai rate after the first call | 38.5% | 29.7% (20.5% to 38.8%) | 31% | 58 | 26 first calls |
| Average win turn | 12.53 | 12.39 (12.08 to 12.70) | 4% | 43 | 33 wins |
| Tenpai rate at draws | 24.2% | 37.9% (30.5% to 45.2%) | 14% | 8 | 33 draws |
| Staying in vs riichi | 8.2% | 13.9% (12.3% to 15.4%) | 2% | 12 | 85 hands facing riichi |
| Efficiency match rate | 72.5% | 72.6% (70.5% to 74.6%) | 74% | 72 | 944 discards |
| Average ukeire loss (tiles) | 1.13 | 1.10 (0.98 to 1.22) | 61% | 58 | 909 discards |
| Breaking shape for value | 2.0% | 2.0% (1.5% to 2.6%) | 46% | 50 | 944 discards |
| Tenpai turn (luck-adjusted) | 8.11 | 8.17 (8.02 to 8.32) | 3% | 50 | 43 tenpai hands |
| Immediate riichi rate | 62.8% | 68.6% (61.3% to 76.0%) | 32% | 19 | 43 tenpai hands |
| Dama rate | 18.2% | 15.2% (8.7% to 21.7%) | 36% | 61 | 33 wins |
| Riichi income | 2,689 | 2,645 (1,775 to 3,515) | 9% | 58 | 38 riichi |
| Riichi win rate | 52.6% | 47.2% (39.9% to 54.6%) | 16% | 68 | 38 riichi |
| Riichi deal-in rate A | 13.2% | 14.3% (13.1% to 15.5%) | 0% | 50 | 38 riichi |
| Riichi deal-in rate B | 10.5% | 11.0% (9.2% to 12.9%) | 2% | 58 | 38 riichi |
| Riichi good-wait rate | 52.6% | 50.2% (43.3% to 57.1%) | 13% | 54 | 38 riichi |
| Riichi draw rate | 15.8% | 18.7% (13.0% to 24.3%) | 15% | 29 | 38 riichi |
| Call income | -215 | 466 (46.17 to 886) | 3% | 26 | 26 calls |
| Win rate after calling | 26.9% | 29.6% (23.4% to 35.7%) | 7% | 40 | 26 calls |
| Deal-in rate after calling | 23.1% | 12.6% (7.9% to 17.2%) | 9% | 8 | 26 calls |
| Metric | Actual | Percentile | Count |
|---|---|---|---|
| Starting hand (shanten) | +0.09 | 100 | 177 hands |
| Dora and red fives dealt | +0.04 | 75 | 177 hands |
| Draw luck | +0.4% | 79 | 2,109 draws |
| Ura-dora luck | -0.13 | 8 | 20 riichi wins |
| Ippatsu rate | +0.3% | 43 | 20 riichi wins |
| Not being chased (/first riichi) | -3.7% | 15 | 31 first riichi |
| Painful dealer tsumo rate | 14.0% | 40 | 50 tsumo against |
| Points from luck (/game) | -3.5 | 36 | 15 games |
| Category | Frequency | Balance per hand | League average | Difference |
|---|---|---|---|---|
| Wins with riichi | 11.3% | +896 | +924 | -28 |
| Wins with calls | 4.0% | +219 | +381 | -163 |
| Dama wins | 3.4% | +112 | +175 | -63 |
| Deal-ins to riichi | 5.1% | -424 | -361 | -63 |
| Deal-ins to open hands | 6.8% | -389 | -203 | -186 |
| Deal-ins to dama | 2.8% | -180 | -102 | -78 |
| Others' tsumo | 28.2% | -722 | -757 | +35 |
| Other (draws etc.) | 38.4% | -105 | -59 | -45 |
| Total (per hand) | -593 |
Players with a similar styleclosest career style metrics first
Not shown: fewer than 40 career games.