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Nishioka Masao

Nishioka Masao (西岡正織) has a rating of 1748, ranked 109 of 452 in professional play. Their highest rating so far is 1795 (May 12, 2022).

Nishioka Masao5 dan西岡正織Nihon Ki-in Chubu
Rating1748
Rank109
1-year change↓3
Peak rating1795
Last 10156-118
2026 record
12-8
Record since 1927
156-118
Win rate
.569

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 1794Low 1731
91 gamesHigh 1794Low 1644
149 gamesHigh 1795Low 1644
272 gamesHigh 1795Low 1494

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, 2026Kato ChieOza Preliminary B　as White↓17
August 20, 2026Ikemoto RyotaGosei　Colors unknown↓13
July 30, 2026Nakano ShoyaGosei　Colors unknown↑7
July 23, 2026Nakao JungoOkan　Colors unknown↓22
July 20, 2026Otake YuHiroshima Aluminum Cup Wakagoi Preliminary Semifinal　Colors unknown↑28
July 20, 2026Ikawa RyougoHiroshima Aluminum Cup Wakagoi Preliminary Final　Colors unknown↑6
July 20, 2026Nakahama KonosukeHiroshima Aluminum Cup Wakagoi Preliminary Round 1　Colors unknown↑6
June 25, 2026Hane NaokiGosei　Colors unknown↑22
June 18, 2026Kato YukiHoninbo　Colors unknown↓24
May 21, 2026Kikkawa HajimeJudan　Colors unknown↓20
May 11, 2026Matsumoto NayokoOkan　Colors unknown±0
April 27, 2026Ito KenryoGosei　Colors unknown↑8
April 16, 2026Ogata MasakiHoninbo　Colors unknown↑16
April 6, 2026Shida TatsuyaMeijin　Colors unknown↓5
March 26, 2026Imabun TaroKisei First Tournament Preliminary Quarterfinal　Colors unknown↓18
March 12, 2026Ikawa RyougoGosei Preliminary C　as Black↑4
February 16, 2026Hane ShigekoKisei First Tournament Preliminary Round 2　Colors unknown↑1
January 26, 2026Suzukawa NatsumiMeijin　Colors unknown↑2
January 15, 2026Otake YuTengen Preliminary A Final　as White↓3
January 8, 2026O KeiiKisei First Tournament Preliminary Round 1　Colors unknown↑8

Head-to-head

Up to 10 opponents, most-played first. Records are from Nishioka Masao'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
Ito Kenryo8-2.8000-00-0
Otake Yu2-8.2000-20-2
Kato Chie4-5.4441-00-3
Mutsuura Yuta1-6.1430-00-1
Shida Tatsuya1-5.1670-00-0
Ogata Masaki3-3.5000-00-0
Hane Yasumasa4-2.6670-00-0
Bian Wenkai4-2.6670-00-0
Terada Shuta6-01.0000-00-0
Tsuruta Kazushi1-5.1670-00-0
Nakane Naoyuki2-3.4000-00-0
Miyagawa Fumihiko4-1.8000-00-0
Kato Yuki3-2.6000-00-0
Yamamori Tadanao4-1.8000-00-0

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
202612-8.600
202518-9.667
202418-15.545
202311-14.440
202222-15.595
202118-13.581
202015-7.682
201918-16.529
201815-14.517
20178-6.571
20161-1.500
Total156-118.569

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