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Sakaguchi Ryuzo

Sakaguchi Ryuzo (坂口隆三) has a rating of 1431. Their highest rating so far is 1657 (June 18, 2015).

Retired. The rating shown is the rating at retirement.

Sakaguchi Ryuzo坂口隆三Nihon Ki-in Kansai HQ
Rating1431
Rank—
1-year change—
Peak rating1657
Last 10207-256
2024 record
5-8
Record since 1927
207-256
Win rate
.447

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.

Professional ratingsFind a player

Rating history — professional

15 gamesHigh 1453Low 1401
43 gamesHigh 1526Low 1401
237 gamesHigh 1657Low 1401

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 22, 2024Kawada KoheiTengen　Colors unknown↓11
August 5, 2024Ishida AtsushiRyusei　Colors unknown↓10
August 1, 2024Yamamoto KentaroTengen　Colors unknown↑20
July 11, 2024Hiroe HiroyukiOza　Colors unknown↓18
June 20, 2024Kasahara YukiTengen　Colors unknown↑21
June 13, 2024Takahashi MasumiOza　Colors unknown↑22
May 13, 2024Mito YukariTengen　Colors unknown↑7
April 25, 2024Muramoto WataruHoninbo　Colors unknown↓3
April 11, 2024Kirimoto KazuoTengen Preliminary C　as White↑3
March 28, 2024Sasaki TsuyoshiGosei　Colors unknown↓12
March 11, 2024Ohashi NaruyaAgon Kiriyama Cup　Colors unknown↓3
February 1, 2024Komatsu DaikiMeijin　Colors unknown↓7
January 18, 2024Utani ShuntaKisei First Tournament Preliminary Round 1　Colors unknown↓11
November 16, 2023Yamamoto KentaroJudan　Colors unknown↓17
October 2, 2023Iwamaru TairaRyusei　Colors unknown↓9
September 4, 2023Sano TakatsuguRyusei　Colors unknown↑11
August 24, 2023Nakano ShoyaOza　Colors unknown↓8
August 3, 2023Muramoto WataruTengen　Colors unknown↓4
July 20, 2023Yanagawa HiromasaOza　Colors unknown↑12
June 29, 2023Miyamoto ChiharuTengen　Colors unknown↑4

Head-to-head

Up to 10 opponents, most-played first. Records are from Sakaguchi Ryuzo'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
Hane Yasumasa2-9.1821-60-0
Yamada Shiho7-3.7000-00-0
Iwamaru Taira2-8.2000-00-0
Ishii Kunio1-7.1251-10-1
Sasaka Shiro4-3.5710-00-0
Ishida Atsushi3-4.4290-00-0
Yanagawa Hiromasa7-01.0000-00-0
Sasaki Tsuyoshi2-5.2860-00-0
Goto Shungo3-4.4290-00-0
Matsuoka Hideki1-6.1430-00-1
Enda Yoichi3-3.5000-00-0
Tajima Shingo2-4.3330-00-0
Muramoto Wataru1-5.1670-00-0
Furuya Masao5-1.8330-00-0
Komatsu Daiki3-3.5000-00-0
Yamada Kimio0-6.0000-20-0
Yamamoto Kentaro3-3.5000-00-0
Nakano Hironari0-5.0000-00-0
Ozaki Harumi4-1.8003-11-0
Ueki Yoshio4-1.8000-00-0
Takei Takashi4-1.8000-00-0
Iwata Tatsuaki2-3.4000-00-0
O Rissei1-4.2001-20-2
Furuta Naoyoshi5-01.0000-00-0
Kori Toshio3-2.6000-00-0
Yanaka Katsunori0-5.0000-00-0
Ikemoto Ryota0-5.0000-00-0
Sano Takatsugu4-1.8000-00-0
Nakamura Shinya0-5.0000-10-0

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
20245-8.385
20238-9.471
20222-8.200
20218-10.444
20206-7.462
20195-8.385
201810-11.476
201711-14.440
201610-7.588
20159-9.500
20143-4.429
20136-5.545
20129-11.450
20117-5.583
20102-2.500
20093-3.500
20071-01.000
20064-7.364
200510-9.526
200414-8.636
200310-11.476
20028-7.533
20010-1.000
19990-1.000
19980-1.000
19960-2.000
19940-1.000
19923-4.429
19910-3.000
19901-2.333
19892-3.400
19881-5.167
19873-4.429
19862-5.286
19851-7.125
19844-5.444
19830-2.000
19822-4.333
19812-3.400
19804-2.667
19791-2.333
19782-3.400
19770-2.000
19765-3.625
19753-4.429
19746-9.400
19735-6.455
19724-5.444
19715-2.714
19700-1.000
19690-1.000
Total207-256.447

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