Go Player Ratings

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Mitani Tetsuya

Mitani Tetsuya (三谷哲也) has a rating of 1841, ranked 65 of 452 in professional play. Their highest rating so far is 1906 (March 19, 2018).

Mitani Tetsuya8 dan三谷哲也Nihon Ki-in Tokyo
Rating1841
Rank65
1-year change↑35
Peak rating1906
Last 10331-223
2026 record
10-5
Record since 1927
331-223(2 no result)
Win rate
.598

The rating is calculated from published game results. It does not include any adjustment for playing Black.

Professional ratingsFind a player

Rating history — professional

20 gamesHigh 1861Low 1793
76 gamesHigh 1883Low 1793
122 gamesHigh 1896Low 1765
451 gamesHigh 1906Low 1664

The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
September 7, 2026Nakaonoda TomomiOza Preliminary B　as White↑9
August 31, 2026Torii YutaSGW Cup Chuyo Preliminary Semifinal　Colors unknown↑9
August 31, 2026Goto ShungoSGW Cup Chuyo Preliminary Round 1　Colors unknown↑5
August 20, 2026Kobayashi KoichiTengen　Colors unknown↑9
July 13, 2026Rin ShienGosei　Colors unknown↓19
July 2, 2026Hirata TomoyaJudan　Colors unknown↓5
May 18, 2026Yokotsuka RikiKisei First Tournament Preliminary Final　Colors unknown↓9
May 11, 2026Okada ShinichiroJudan　Colors unknown↑4
April 23, 2026Kanazawa HideoHoninbo　Colors unknown↓23
April 16, 2026Shuto ShunKisei First Tournament Preliminary Semifinal　Colors unknown↑18
April 6, 2026Mizokami TomochikaMeijin　Colors unknown↓17
March 30, 2026Rin ShienHoninbo　Colors unknown↑13
March 16, 2026Mochizuki KenichiKisei First Tournament Preliminary Quarterfinal　Colors unknown↑17
February 5, 2026Kin EnKisei First Tournament Preliminary Round 2　Colors unknown↑1
January 8, 2026Yo ChitoKisei First Tournament Preliminary Round 1　Colors unknown↑16
December 11, 2025Oomote TakutoMeijin　Colors unknown↑15
November 13, 2025Ko IunMeijin　Colors unknown↑6
November 6, 2025Ko IsoOza　Colors unknown↓7
October 16, 2025Chang FukangTengen　Colors unknown↓19
September 22, 2025Nyu EikoOza　Colors unknown↑13

Head-to-head

Up to 10 opponents, most-played first. Records are from Mitani Tetsuya's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
OpponentTotalAs BlackAs White
Sun Zhe4-5.4440-11-0
Shuto Shun2-6.2500-20-0
Ko Iso5-3.6251-12-0
Lee Ishu4-4.5000-22-1
Ogaki Yusaku3-4.4291-10-1
Mizokami Tomochika2-5.2860-20-0
Kobayashi Koichi3-4.4291-01-0
Kono Rin2-3.4000-00-1
Yamashita Keigo0-7.0000-40-1
Mochizuki Kenichi3-3.5002-10-1
Motoki Katsuya2-4.3332-20-2
Mimura Tomoyasu2-4.3330-10-0
Izumitani Hideo6-01.0000-00-0
Xie Yimin6-01.0001-02-0
Fujita Akihiko2-4.3330-00-2
Cho Sonjin0-6.0000-00-4
Ko Reibun2-4.3331-10-0
Seto Taiki3-3.5001-21-1
Iguchi Toyohide3-2.6000-00-0
Anzai Nobuaki4-1.8002-11-0
Tsuruyama Atsushi3-2.6000-01-0
O Rissei5-01.0001-02-0
Takao Shinji1-4.2000-41-0
Shiraishi Yuichi3-2.6001-01-2
Ishida Yoshio2-3.4001-20-0
Yamada Takuji2-3.4000-10-0
Takanashi Seiken3-2.6000-01-0
Yuki Satoshi1-4.2000-11-1
Ryu Shikun0-5.0000-30-1

Record by year

Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.

YearRecordWin rate
202610-5.667
202514-11.560
202417-12.586
202311-9.550
202219-11.633
202113-10.565
20203-5.375
201917-11.607
201822-14.611
201722-18.550
201623-10.697
20159-12(2 no result).429
20149-8.529
20133-7.300
201217-11.607
201112-9.571
201015-5.750
20097-4.636
20086-4.600
20077-4.636
20067-9.438
200517-9.654
200425-14.641
200319-7.731
20027-4.636
Total331-223(2 no result).598

Calculated from games played between 1927 and 2026 (as of September 17, 2026).