Unofficial stats site · game records 2018-19–2026-27

About

M Data Lab is an unofficial stats site that sets out to separate luck from skill in M.League's game records. It is not affiliated with the M.League organisation, its teams or its players.

Data

• Game records: M League Haifu (data published by its operator). They are imported with the game database konoui/m-league-game-db published by the same operator (MIT License, © 2025 konoui).
• Covered: 2018-19–2026-27, 1,940 games, 23,653 hands
• 23 hands with faulty records are left out of the style and luck metrics (but kept in game results).
• Results are calculated from the game records and may differ slightly from the official records (rounding and the like).

How each number is calculated is in the methodology in detail (Japanese), and the checks that the calculations work are in Are these numbers right? (Japanese). The columns, the methodology and the validation are in Japanese only.

Rules

Calculated under the official M.League rules (25,000 start, 30,000 return, uma +30/+10/-10/-30, no busting, no abortive draws).

Contact address

* Written this way to keep spam away. Enquiries to any other address are not answered.