Go Player Ratings

JAAbout ratings

Onishi Ryuhei

Onishi Ryuhei (大西竜平) has a rating of 2139, ranked 9 of 452 in professional play. Their highest rating so far is 2143 (May 7, 2026).

Onishi Ryuhei7 dan大西竜平Nihon Ki-in Tokyo
Rating2139
Rank9
1-year change↑175
Peak rating2143
Last 10343-159(1 lost by default)
2026 record
17-4
Record since 1927
343-159
Win rate
.683

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

Professional ratingsFind a player

Rating history — professional

41 gamesHigh 2143Low 1949
91 gamesHigh 2143Low 1804
177 gamesHigh 2143Low 1804
463 gamesHigh 2143Low 1490

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 10, 2026Mochizuki KenichiHoninbo Preliminary A　as White↑5
September 3, 2026Takei TaishinGosei　Colors unknown↑3
August 24, 2026Hirata TomoyaKisei　as Black↑17
August 6, 2026Koyama KuyaKisei League B2　as Black↑12
July 27, 2026Lee IshuHoninbo　Colors unknown↑4
July 13, 2026I RyoKisei League B2　as Black↑12
July 6, 2026Hirose YuichiMeijin　Colors unknown↓18
June 22, 2026Motoki KatsuyaOza Round 2　as Black↓11
June 18, 2026U BoiKisei League B2　as White↑10
June 11, 2026Xie YiminJudan Preliminary A　as White↓29
June 4, 2026Hirata TomoyaOza Round 1　as Black↑18
May 28, 2026Kuwabara YokoHoninbo　Colors unknown↑1
May 25, 2026Hon AkiyoshiKisei League B2　as White↓26
May 7, 2026Yanai KazumaMeijin　Colors unknown↑2
April 30, 2026I RyoJudan　Colors unknown↑10
April 20, 2026Onishi KenyaKisei League B2　as Black↑7
April 19, 2026Tsuji ShigehitoNHK Cup Round 1　as White↑6
March 23, 2026Rin KanketsuKisei League B2　as White↑11
March 9, 2026Mimura TomoyasuOza Final Preliminary Final　as Black↑5
February 23, 2026Miura TaroKisei League B2　as White↑16

Head-to-head

Up to 10 opponents, most-played first. Records are from Onishi Ryuhei'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
Hirose Yuichi9-2.8184-00-0
Motoki Katsuya1-9.1001-20-2
Shibano Toramaru2-7.2222-40-2
So Yokoku5-3.6252-01-1
Kono Rin3-5.3753-20-1
Yokotsuka Riki5-3.6251-01-2
Fujisawa Rina6-2.7501-11-1
Hane Naoki4-3.5712-21-1
Yoda Norimoto0-7.0000-30-3
Fujita Akihiko6-1.8571-01-1
Otake Yu4-3.5711-02-3
Suzuki Shinji5-2.7141-13-0
Hon Akiyoshi4-2.6671-12-1
Tsuruyama Atsushi3-3.5003-00-1
Yu Zhengqi4-2.6673-21-0
Chang Ruei Jie5-1.8333-10-0
Mutsuura Yuta4-2.6670-23-0
Kyo Kagen2-4.3331-21-1
U Boi5-1.8331-03-1
Yo Chito5-1.8330-01-1
Rin Kanketsu5-1.8332-12-0
Sun Zhe3-3.5000-11-2
Cho U4-2.6671-12-1
Yamashita Keigo3-3.5001-01-3
Koyama Kuya3-3.5001-10-1
Hirata Tomoya3-3.5002-10-0
Ichiriki Ryo0-6.0000-20-2
Sada Atsushi2-3.4000-11-2
Kobayashi Koichi5-01.0002-01-0
I Ryo4-1.8003-00-0

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
202617-4.809
202545-9.833
20240-7.000
202318-19.486
202225-21.543
202130-15.667
202036-17.679
201929-18.617
201847-13.783
201743-18.705
201644-14.759
20159-4.692
Total343-159.683

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