Go Player Ratings

JAAbout ratings

Otani Naoki

Otani Naoki (大谷直輝) has a rating of 1805, ranked 81 of 452 in professional play. Their highest rating so far is 1827 (August 3, 2026).

Otani Naoki5 dan大谷直輝Nihon Ki-in Kansai HQ
Rating1805
Rank81
1-year change↑35
Peak rating1827
Last 10210-131
2026 record
11-7
Record since 1927
210-131
Win rate
.616

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

Professional ratingsFind a player

Rating history — professional

21 gamesHigh 1827Low 1767
74 gamesHigh 1827Low 1707
128 gamesHigh 1827Low 1704
339 gamesHigh 1827Low 1454

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 14, 2026Shida TatsuyaGosei Preliminary A　as White↓8
September 3, 2026Hane NaokiTengen　Colors unknown↓13
August 3, 2026Fujita AkihikoSGW Cup Chuyo Preliminary Semifinal　Colors unknown↑26
August 3, 2026Takanashi SeikenSGW Cup Chuyo Preliminary Round 1　Colors unknown↑10
July 23, 2026Terada ShutaGosei　Colors unknown↑8
June 29, 2026Goto HajimuHoninbo　Colors unknown↓20
June 11, 2026Ishii KunioGosei　Colors unknown↑6
May 25, 2026Sakamoto YasuoHoninbo　Colors unknown↑3
April 30, 2026Kunimatsu SoGosei　Colors unknown↑6
April 23, 2026Asahi YujunKisei First Tournament Preliminary Semifinal　Colors unknown↓24
April 16, 2026Sakai TakashiHoninbo　Colors unknown↑6
March 30, 2026Nakano HironariKisei First Tournament Preliminary Quarterfinal　Colors unknown↑15
March 19, 2026Kasahara YukiGosei　Colors unknown↑6
March 12, 2026Muramoto WataruJudan　Colors unknown↓9
February 26, 2026Fujita AkihikoOza Final Preliminary Final　as Black↓8
February 16, 2026Kumamoto ShuseiKisei First Tournament Preliminary Round 2　Colors unknown↑9
January 26, 2026Yamada KimioMeijin Preliminary B　as Black↓16
January 15, 2026Kato YukiKisei First Tournament Preliminary Round 1　Colors unknown↑8
December 11, 2025Nakamura ShinyaOza Preliminary A Final　as White↑16
November 20, 2025Hane NaokiOza Preliminary A　as White↑18

Head-to-head

Up to 10 opponents, most-played first. Records are from Otani Naoki'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
Muramatsu Hiroki2-8.2000-01-0
Sasaka Shiro6-1.8570-00-0
Ohashi Naruya2-5.2860-10-0
Araki Issei7-01.0000-00-0
Sakai Takashi5-2.7140-00-0
Komatsu Daiki6-1.8570-00-0
Nakano Hironari3-3.5001-01-0
Hane Naoki2-4.3331-11-1
Tanaka Nobuyuki4-2.6671-00-0
Sakamoto Yasuo5-1.8330-00-0
Goto Shungo5-1.8331-00-0
Hikosaka Naoto3-3.5001-11-1
Nakamura Shinya5-1.8330-01-0
Shimojima Yohei3-2.6000-10-0
Konishi Yoshiakira1-4.2000-00-1
Enda Hideki5-01.0000-00-0
Nakano Shoya4-1.8000-00-0
Yanaka Katsunori3-2.6000-00-0
Minematsu Masaki5-01.0000-00-0
Yamada Kimio0-5.0000-30-1
Otake Yu0-5.0000-00-0
Utani Shunta5-01.0000-00-0
Sano Takatsugu3-2.6000-00-0
Tsuruta Kazushi1-4.2000-01-0
Kuwamoto Shinpei5-01.0000-00-0

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
202611-7.611
202512-9.571
202423-8.742
202316-11.593
202216-10.615
202118-9.667
202013-10.565
201918-13.581
201824-14.632
201728-14.667
201616-13.552
201513-9.591
20142-4.333
Total210-131.616

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