Go Player Ratings

JAAbout ratings

Oba Junya

Oba Junya (大場惇也) has a rating of 1781, ranked 93 of 452 in professional play. Their highest rating so far is 1925 (March 5, 2020).

Oba Junya8 dan大場惇也Nihon Ki-in Chubu
Rating1781
Rank93
1-year change↓34
Peak rating1925
Last 10281-204
2026 record
13-6
Record since 1927
281-204
Win rate
.579

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

Professional ratingsFind a player

Rating history — professional

24 gamesHigh 1808Low 1741
78 gamesHigh 1842Low 1741
135 gamesHigh 1887Low 1735
425 gamesHigh 1925Low 1551

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
August 27, 2026Imamura YoshiakiGosei　Colors unknown↑12
August 20, 2026Yamamori TadanaoSGW Cup Chuyo Preliminary Round 1　Colors unknown↓24
August 6, 2026Takei TakashiTengen　Colors unknown↑9
July 27, 2026Muramoto WataruHoninbo　Colors unknown↓9
July 16, 2026Ikemoto RyotaJudan　Colors unknown↓14
July 2, 2026Sakuramoto AyakoHoninbo　Colors unknown↑2
June 18, 2026Horimoto MitsunariJudan　Colors unknown↑14
June 11, 2026O KeiiOkan　Colors unknown↑6
May 28, 2026Shiga TsukasaJudan　Colors unknown↑10
May 14, 2026Inagaki YoOkan　Colors unknown↑1
May 7, 2026Nakane DaikiJudan　Colors unknown↑10
April 27, 2026Mutsuura YutaMeijin　Colors unknown↓6
March 30, 2026Suzukawa NatsumiJudan　Colors unknown↑3
March 23, 2026Ikawa RyougoHoninbo　Colors unknown↑4
February 26, 2026Terada ShutaJudan　Colors unknown↑8
February 12, 2026Yanagisawa SatoshiMeijin　Colors unknown↑11
February 2, 2026Shinoda MitsuakiJudan　Colors unknown↑3
January 19, 2026Kitano RyoKisei First Tournament Preliminary Round 1　Colors unknown↓24
January 8, 2026Otake YuOza Preliminary A Final　as Black↓3
November 20, 2025Goto HajimuOza　Colors unknown↑12

Head-to-head

Up to 10 opponents, most-played first. Records are from Oba Junya'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
O Rissei4-5.4442-30-1
Mimura Tomoyasu3-5.3751-21-0
Mochizuki Kenichi4-3.5711-10-0
Shuto Shun3-3.5000-00-1
Ishida Yoshio2-4.3330-01-2
Rin Kanketsu2-4.3330-01-1
Kim Sujun4-2.6671-02-1
Iguchi Toyohide1-4.2000-00-0
Takemiya Masaki1-4.2000-11-2
Yamada Takuji2-3.4001-00-0
Ko Iso0-5.0000-10-1
O Meien2-3.4001-11-2
Morita Michihiro3-2.6000-01-0
Mizokami Tomochika4-1.8001-10-0
Yamashita Keigo2-3.4002-20-1
Tsuruta Kazushi1-4.2000-10-0
Ichiriki Ryo2-3.4001-10-0

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
202613-6.684
202513-11.542
202417-14.548
202326-11.703
20229-10.474
202115-9.625
202017-9.654
201921-11.656
201815-14.517
201721-12.636
201613-11.542
201511-9.550
20147-6.538
20137-4.636
201215-13.536
20118-9.471
20104-5.444
20091-5.167
20081-6.143
20072-3.400
20068-7.533
200513-7.650
200416-10.615
20038-2.800
Total281-204.579

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