M.League

M.League
	; M.League logo
Country	Japan
Inception	2018
Leader	Mr. Susumu Fujita, Chairman ; (Founder/President of CyberAgent)
Members	9 teams

M.League 「Mリーグ」 is a professional mahjong league founded in 2018. It is a team competition: teams draft players from various mahjong organizations, then compete over a season to reach the top. It is the first league that pays a salary to its mahjong players; each team is sponsored by a company.

Format

The main format of the competition is made up of a regular season and a post-season. The basic format of the season varies in the number of hanchan played.

Current format

There are nine teams, with four players per team. The regular season lasts 108 days for 216 hanchan (96 hanchan per team). After the final day of the regular season, the top six teams advance to the semifinals, where they play 30 hanchan on a 15-day schedule (20 hanchan per team). In the finals, the top four teams play another round of 16 hanchan on an 8-day schedule.

Rules

The game rules are given in the Official M.League Rules 「Mリーグの公式戦ルール」. All games are played in the form of hanchan using AMOS brand professional mahjong tables.

Game day

Each game day session consists of two hanchan. Each team that is scheduled to play will send one team member per hanchan. If desired, one player may play both hanchan.

Game rules

M.League rules follow the general riichi mahjong rules with special competition settings.

The starting score is 25,000 points; the target score is 30,000 points. The bonus of oka and uma is +50/+10/-10/-30. ^[1]

Notable rule variations

Tie: Bonus point spilts evenly to tied players.
Multiple ron: Atamahane.
Fu: Double-wind pair worths 2 fu.
Ryuukyoku: No abortive draws.
Dora:
- Akadora: Three tiles. One for each 5-man / 5-pin / 5-sou.
- Kandora: Always flips immediately regardless of the type of kan, as long as the call is valid. When chankan happens, kandora will not be flipped.
Yakuman:
- Counted yakuman: Not applied. Regular yaku scoring is capped to sanbaiman.
- Double yakuman: Not applied. Only scores the regular version for suuankou tanki / kokushi 13-wait / junsei chuuren poutou. Daisuushi also worths single yakuman.
- Composite yakuman: Applied. Yakuman yaku can be stacked together.
- Sekinin barai: Applies to daisangen, daisuushi and suukantsu. Suukantsu's pao only applies to the case where sankantsu is completed while fourth kan is daiminkan.

Penalty

M.League has four types of penalties: chombo, dead hand, yellow card and red card.

Draft

Before the start of each season, a day is set for team drafts. Teams select from a field of players from the various professional organizations. During the inaugural draft (2018), each team made their player selections. For each year thereafter, teams had the option of drafting new players or otherwise passing on the opportunity. Beginning with the 2022–23 season, passing is no longer allowed.

Announcers

Main

Guest

Several guest commentators appear on the program. The most regular guest commentator is Koushou Tsuchida. Other commentators may be either current league players, former members, or other mahjong professionals.

M.League Studio

The league has its own studio for games and broadcasts, located in Hamamatsuchou, Minato, Tokyo. All games during a season take place in the M League studio.

A jansou called M.League Stadium is open to the public in Takadanobaba.

Teams

As of the 2023–24 season, there are nine teams competing in the league. Each team must have four players drafted from five professional mahjong organizations: Saikouisen Nihon Pro Mahjong, the Japan Professional Mahjong League (JPML), Nihon Pro Mahjong Kyoukai (NPM), Mahjong Union (MU), and Real Mahjong Unit (RMU).

Overview of M.League teams
	Company sponsor	Players	Joined
Akasaka Drivens	Hakuhodo DY Media Partners	Ken Sonoda (Saikouisen) Taro Suzuki (Saikouisen) Maki Asami (Saikouisen) Futoshi Watanabe (Saikouisen)	2018–19
Beast X	BSJapanext	Masatoshi Sarukawa (JPML) Hiroe Sugawara (JPML) Daisuke Suzuki (JPML) Kana Nakada (JPML)	2023–24
EX Furinkazan	TV Asahi	Aki Nikaido (JPML) Kenji Katsumata (JPML) Takaya Matsugase (RMU) Rumi Nikaido (JPML)	2018–19
Kadokawa Sakura Knights	Kadokawa	Kotaro Uchikawa (JPML) Sayaka Okada (JPML) Shingo Hori (NPM) Nanba Shibukawa (NPM)	2019–20
Konami Mahjong Fight Club	Konami Amusement	Hisato Sasaki (JPML) Mari Takamiya (JPML) Arisa Date (JPML) Kazunori Takizawa (JPML)	2018–19
SegaSammy Phoenix	Sega Sammy Holdings	Sayaka Kayamori (Saikouisen) Hiroshi Daigo (Saikouisen) Genta Takeuchi (Saikouisen) Takaki Asai (NPM)	2018–19
Shibuya Abemas	CyberAgent	Takaharu Ooi (RMU) Sho Shiratori (JPML) Yoshihiro Matsumoto (NPM) Aiko Hinata (Saikouisen)	2018–19
Team Raiden	Dentsu	Masato Hagiwara (JPML) Naoki Setokuma (JPML) Saki Kurosawa (JPML) Tomohiro Honda (JPML)	2018–19
U-Next Pirates	U-Next	Go Kobayashi (MU) Akina Mizuhara (Saikouisen) Yu Suzuki (Saikouisen) Kei Nakabayashi (NPM)	2018–19

Seasons

Season	Start Date	End Date	Winner	Runner-up	Top regular season player
2018–19	2018-10-01	2019-03-31	Akasaka Drivens	EX Furinkazan	Takaharu Ooi
2019–20	2019-09-30	2020-06-23	U-Next Pirates	SegaSammy Phoenix	Yuumi Uotani
2020–21	2020-10-05	2021-05-18	EX Furinkazan	Kadokawa Sakura Knights	Hisato Sasaki
2021–22	2021-10-04	2022-04-26	Kadokawa Sakura Knights	SegaSammy Phoenix	Akina Mizuhara
2022–23	2022-10-03	2023-05-19	Shibuya Abemas	Konami Mahjong Fight Club	Arisa Date
2023–24	2023-09-18	2024-05-17	U-Next Pirates	Akasaka Drivens	Yu Suzuki
2024–25	2024-09-16

Top 10 hanchan scores

Rank	Player	Team	Score	Date	Season (Hanchan)
1	Taro Suzuki	Akasaka Drivens	132.8	2024-02-26	2023–24 (Reg 178)
2	Saki Kurosawa	Team Raiden	132.7	2022-11-07	2022–23 (Reg 41)
3	Arisa Date	Konami Mahjong Fight Club	125.5	2021-11-18	2021–22 (Reg 54)
4	Koushin Asakura	U-Next Pirates	122.4	2021-12-02	2021–22 (Reg 70)
5	Hisato Sasaki	Konami Mahjong Fight Club	118.2	2021-04-22	2020–21 (SF 14)
6	Yuumi Uotani	Sega Sammy Phoenix	114.4	2020-02-27	2019–20 (Reg 167)
7	Hisato Sasaki	Konami Mahjong Fight Club	114.0	2021-02-18	2020–21 (Reg 154)
8	Yoshihiro Matsumoto	Shibuya Abemas	113.7	2021-04-29	2020–21 (SF 22)
9	Shingo Hori	Kadokawa Sakura Knights	112.9	2021-01-02	2020–21 (Reg 97)
10	Makoto Sawazaki	Kadokawa Sakura Knights	112.1	2019-11-19	2019–20 (Reg 64)

Yakuman

Main article: List of MLeague yakuman

So far, all the yakuman scored fall under yakuman gosanke: suuankou, daisangen, and kokushi musou. The most scored in a season was in the 2019 season with eight.