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Utsumi Koki

Utsumi Koki (内海晃希) has a rating of 1635, ranked 174 of 452 in professional play. Their highest rating so far is 1657 (January 14, 2026).

Utsumi Koki4 dan内海晃希Kansai Ki-in
Rating1635
Rank174
1-year change↑5
Peak rating1657
Last 1037-54
2026 record
2-3
Record since 1927
37-54
Win rate
.407

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

Professional ratingsFind a player

Rating history — professional

5 gamesHigh 1657Low 1633
22 gamesHigh 1657Low 1557
46 gamesHigh 1657Low 1557
88 gamesHigh 1657Low 1457

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 2, 2026Tsuji ShigehitoGosei Preliminary A Semifinal　as Black↓8
August 20, 2026Kim PyonminTengen Preliminary A　as Black↑10
April 8, 2026Takashima YugoKansai Ki-in First Place Tournament Round 2　as White↓12
February 11, 2026Hara MasakazuKisei First Tournament Preliminary Round 2　Colors unknown↓12
January 14, 2026Omote YutoKansai Ki-in First Place Tournament Round 1　as White↑27
June 11, 2025Nishi TakenobuJudan Preliminary A　as White↓5
May 8, 2025Konishi YoshiakiraKisei First Tournament Round 5　as Black↓12
April 24, 2025Osawa KenroKisei First Tournament Preliminary Semifinal　Colors unknown↑7
April 16, 2025Yata NaokiMeijin Preliminary C　as Black↑16
April 3, 2025Otani NaokiKisei First Tournament Preliminary Quarterfinal　Colors unknown↑25
January 29, 2025Yamazaki YoshihiroKisei First Tournament Preliminary Round 2　Colors unknown↑11
January 16, 2025Ishii KunioKisei First Tournament Preliminary Round 1　Colors unknown↑12
December 4, 2024Murakawa DaisukeKansai Ki-in First Place Tournament Round 1　as Black↓2
August 21, 2024U BoiHoninbo Preliminary B　as White↓4
August 7, 2024Kiyonari TetsuyaGosei Preliminary A　as White↑25
April 24, 2024Taniguchi ToruJudan Preliminary A　as White↓6
February 28, 2024Omote YutoKansai Ki-in First Place Tournament Round 2　as White↓13
February 7, 2024Mishima HibikiKansai Ki-in First Place Tournament Round 1　as White↑11
January 31, 2024Tsuji ShigehitoOza Preliminary A　as Black↓7
December 21, 2023Ota RyoKisei First Tournament Preliminary Round 1　Colors unknown↓19

Head-to-head

Up to 10 opponents, most-played first. Records are from Utsumi Koki'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
Taniguchi Toru2-2.5000-01-2
Abe Yoshiki0-4.0000-10-0
Tsuji Shigehito0-3.0000-30-0
Omote Yuto2-1.6670-01-1
Sada Atsushi0-3.0000-10-2
U Boi1-2.3331-00-1
Nakano Yasuhiro0-2.0000-00-2
Imamura Toshiya0-2.0000-10-1
Sato Yohei1-1.5000-00-1
Konishi Yoshiakira1-1.5000-10-0

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
20262-3.400
20255-2.714
20242-5.286
20232-5.286
20227-7.500
20215-7.417
20204-2.667
20192-5.286
20183-2.600
20171-5.167
20164-8.333
20150-2.000
20140-1.000
Total37-54.407

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