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Akiyama Jiro

Akiyama Jiro (秋山次郎) has a rating of 1843, ranked 63 of 452 in professional play. Their highest rating so far is 1950 (October 4, 2013).

Akiyama Jiro9 dan秋山次郎Nihon Ki-in Tokyo
Rating1843
Rank63
1-year change↓19
Peak rating1950
Last 10422-297
2026 record
11-7
Record since 1927
422-297(2 no result)
Win rate
.587

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

Professional ratingsFind a player

Rating history — professional

25 gamesHigh 1929Low 1835
78 gamesHigh 1929Low 1768
130 gamesHigh 1929Low 1679
514 gamesHigh 1950Low 1679

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 17, 2026Tsuji HanaOza Preliminary B　as Black↑8
September 10, 2026Ko IsoKisei　as White↓7
August 13, 2026Hamakado HibikiHoninbo　Colors unknown↓22
August 6, 2026Ogata MasakiMeijin　Colors unknown↓22
July 23, 2026Fujii KokiKisei League C Round 3　as Black↓15
July 13, 2026Yoshida TomaGosei　Colors unknown↓28
July 2, 2026Ueno AsamiMeijin　Colors unknown↑20
June 25, 2026Goto HajimuKisei League C Round 2　as White↑8
June 11, 2026Omori YasushiHoninbo　Colors unknown↑3
June 4, 2026Tanaka KoyuKisei League C Round 1　as Black↓17
May 7, 2026Anzai NobuakiKisei First Tournament Preliminary Final　Colors unknown↑18
April 27, 2026Mochizuki KenichiMeijin　Colors unknown↑13
April 20, 2026Obuchi KotaroKisei First Tournament Preliminary Semifinal　Colors unknown↑13
March 23, 2026Katsura AtsushiKisei First Tournament Preliminary Quarterfinal　Colors unknown↑4
March 5, 2026Sugimoto AkiraJudan　Colors unknown↓28
February 26, 2026Takeshita RyoyaKisei First Tournament Preliminary Round 2　Colors unknown↑10
February 9, 2026Fujii KokiMeijin Preliminary B　as White↑17
February 2, 2026Onishi KenyaJudan Preliminary C　as Black↑21
December 25, 2025Kono MitsukiMeijin Preliminary C　as Black↑11
December 4, 2025Koike YoshihiroTengen Preliminary A Final　as White↓8

Head-to-head

Up to 10 opponents, most-played first. Records are from Akiyama Jiro'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
Mimura Tomoyasu6-8.4293-11-2
Kono Rin2-10.1671-31-5
Ryu Shikun5-9.3572-21-3
Takao Shinji1-11.0830-31-4
O Rissei5-6.4550-25-3
So Yokoku4-6.4002-11-2
Hane Naoki4-5.4440-24-3
Rin Kanketsu4-5.4441-41-0
Iyama Yuta3-6.3331-32-3
Cho U1-8.1110-21-5
Han Zenki4-5.4441-02-1
Cho Chikun5-4.5561-24-2
Ko Iso1-7.1250-31-2
Mizokami Tomochika4-4.5003-11-2
Kataoka Satoshi4-4.5002-20-1
Shibano Toramaru1-7.1250-31-2
Cho Sonjin5-3.6251-04-2
Anzai Nobuaki7-01.0000-02-0
Yoda Norimoto4-3.5711-22-1
Tsuruyama Atsushi3-4.4292-21-0
Shuto Shun7-01.0002-02-0
Ishida Yoshio4-3.5711-11-1
Adachi Toshimasa3-4.4291-01-2
Yamada Kimio5-2.7142-23-0
Matsumoto Takehisa3-4.4293-20-1
Yuki Satoshi3-4.4290-23-2
Motoki Katsuya3-3.5000-11-0
Shida Tatsuya2-4.3330-12-2
Ogata Masaki3-3.5002-21-0
Sakai Hideyuki6-01.0003-01-0
O Meien3-3.5000-02-2
Komatsu Hideki3-3.5001-00-0
Kurotaki Masanori4-1.8002-00-1
Mochizuki Kenichi5-01.0003-01-0
Yo Kagen3-2.6000-10-0
Morita Michihiro2-3.4001-11-0
Sun Zhe1-4.2000-10-1
Kato Atsushi3-2.6001-02-1
Yamashita Keigo2-3.4002-00-3
Kim Sujun3-2.6001-01-1
Nishimura Keiji5-01.0002-00-0
Sakai Takeshi2-3.4001-00-0

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
202516-10.615
202420-9.690
202317-11.607
202211-14.440
202110-15.400
202020-13.606
201916-15.516
201828-18.609
201718-14.563
201617-10.630
201514-10.583
20149-7.563
201317-11.607
201223-12.657
201114-14.500
201014-10.583
200911-8.579
20085-3.625
20073-5(2 no result).375
20063-8.273
200517-11.607
200414-10.583
200320-12.625
200219-8.704
20019-2.818
20005-6.455
199912-7.632
19987-4.636
19975-3.625
19961-1.500
19956-4.600
19944-2.667
19936-3.667
Total422-297(2 no result).587

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