Go Player Ratings

JAAbout ratings

Segawa Yoshio

Segawa Yoshio (瀬川良雄) has a rating of 1510.

Retired. The rating shown is the rating at retirement.

Segawa Yoshio瀬川良雄Nihon Ki-in
Rating1510
Rank—
1-year change—
Peak rating—
Last 1094-124(1 by default)
1979 record
0-1
Record since 1927
94-124(1 jigo)
Win rate
.431

Rating at retirement (not included in the rating list)

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

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Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
January 11, 1979Hane YasumasaKisei 8 dan Section　as White↓5
November 30, 1978Hane YasumasaTengen 2nd Preliminary　as White↓6
November 16, 1978Hane YasumasaOza 2nd Preliminary　as White↓7
April 15, 1976Nie WeipingJapan-China Go Exchange Round 5　as White—
March 25, 1976Hane YasumasaMeijin 2nd Preliminary　as White↓8
February 12, 1976Hashimoto YoshimiJudan 2nd Preliminary　as Black↓13
January 29, 1976Yamabe ToshiroGosei Preliminary　as Black↓7
January 15, 1976Mizuno IchiroJudan 2nd Preliminary　as White↑12
October 16, 1975Hiroe KatsuhikoTengen 2nd Preliminary　as White↓23
October 2, 1975Nishigami YoshihikoTengen 2nd Preliminary　as White↑6
September 11, 1975Magari ReikiHoninbo 3rd Preliminary　as Black↓13
May 29, 1975Maetani ShingoHoninbo 2nd Preliminary　as White↑7
April 24, 1975Shimamura ToshihiroMeijin 3rd Preliminary　as White↓8
March 6, 1975Kuwata YasuakiMeijin 2nd Preliminary　as Black↑12
February 13, 1975Hisai KeishiMeijin 2nd Preliminary　as White↑21
January 9, 1975Rin KaihoAll-Japan First Place Tournament Round 2　as Black↓3
December 12, 1974Ito HiroshiTengen 2nd Preliminary　as Black↓24
October 10, 1974Ohira ShuzoAll-Japan First Place Tournament Round 1　as White↑26
September 5, 1974Saijo MasatakaJudan 2nd Preliminary　as Black↓18
August 22, 1974Tsuchida MasamitsuOza 2nd Preliminary　as White↓14

Head-to-head

Up to 10 opponents, most-played first. Records are from Segawa Yoshio'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
Hisai Keishi3-8.2730-13-7
Hane Yasumasa1-9.1000-11-8
Hashimoto Yoshimi5-4.5563-22-2
Sakai Michiharu6-2.7503-13-1
Kusaka Kaneo7-01.0003-04-0
Sometani Kazuo3-4.4292-01-4
Iwata Tatsuaki1-5.1670-31-2
Yoshida Yoichi3-3.5003-30-0
Miyashita Shuyo0-6.0000-20-4
Shimamura Toshihiro0-5.0000-30-2

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
19790-1.000
19780-2.000
19761-4.200
19754-4.500
197410-8.556
19737-6.538
19724-6.400
19715-6.455
19708-8.500
19692-5.286
19685-7.417
19678-6.571
19662-6.250
19656-7.462
19648-7(1 jigo).533
196310-7.588
19624-7.364
19612-3.400
19606-7.462
19590-1.000
19580-3.000
19560-2.000
19541-4.200
19530-1.000
19520-5.000
19511-1.500
Total94-124(1 jigo).431

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