Go Player Ratings

JAKOAbout ratings

Won Seongjin

Won Seongjin (원성진) has a rating of 1886, ranked 26 of 340 in korea play. Their highest rating so far is 2099 (March 23, 2022).

Won Seongjin원성진元晟溱
Rating1886
Rank26
1-year change↓45
Peak rating2099
Last 10718-391(4 by default)
2026 record
11-10
Record since 1954
718-391
Win rate
.647

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

Korea ratingsFind a player

Rating history — korea

29 gamesHigh 1970Low 1840
84 gamesHigh 2027Low 1840
207 gamesHigh 2099Low 1840
1105 gamesHigh 2099Low 1519

The “All” view starts at 1970; 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 24, 2026Lee JihyunSG杯 韓国日報 名人戦 패자조 2회전　as Black↓13
August 21, 2026Park JunghwanSG杯 韓国日報 名人戦 Quarterfinal　as Black↓7
August 7, 2026Kim JinhyuSG杯 韓国日報 名人戦 Round of 16　as White↑9
July 23, 2026Park GeunhoSG杯 韓国日報 名人戦 Preliminary Final　as Black↑17
July 21, 2026Kim Won-daeSG杯 韓国日報 名人戦 Preliminary Round 4　as White↑5
July 20, 2026Ju HyunwooSG杯 韓国日報 名人戦 Preliminary Round 3　as Black↑10
July 18, 2026Ko JaeheeSG杯 韓国日報 名人戦 Preliminary Round 2　as White±0
July 17, 2026Lee JungwooSG杯 韓国日報 名人戦 Preliminary Round 1　as White↑7
April 22, 2026Hong SeongjiGS Caltex杯 プロ棋戦 패자조 2회전　as White↓13
March 27, 2026Kim JunghyunGS Caltex杯 プロ棋戦 Main Quarterfinal　as Black↓11
March 5, 2026Kang YootaekGS Caltex杯 プロ棋戦 Main Round of 16　as White↑23
February 23, 2026Song GyusangSopalkosanol最高棋士決定戦 예선 4회차　as White↓16
February 22, 2026Choi WongyongSopalkosanol最高棋士決定戦 예선 3회차　as White↑7
February 21, 2026Kim Dan-yuSopalkosanol最高棋士決定戦 예선 2회차　as White↑2
February 8, 2026Byun Sangil한국바둑리그 14-1　as Black↑26
January 30, 2026Park Jihyun한국바둑리그 13-2　as White↓22
January 26, 2026Choi JeongMaxim Coffee杯 入神最強戦 Main Round of 32　as White↓14
January 24, 2026Lee Jihyun한국바둑리그 12-3　as White↓13
January 18, 2026Park Mingyu한국바둑리그 11-4　as Black↓12
January 8, 2026Hong Seongji한국바둑리그 10-1　as Black↑20

Tournament names are shown in Korean, as the Korea Baduk Association writes them, unless an English name is known.

Round names are translated from the Korea Baduk Association's wording; those we cannot translate are left in Korean.

Record by year

Counted by calendar year, January to December, from Korea Baduk Association games only (default wins and losses are included; jigo and no-result games are not). Games from 1954 onward; international tournaments are not included.

YearRecordWin rate
202611-10.524
202517-14.548
202414-13.518
202336-22.621
202237-25.597
202124-10.706
202016-5.762
20199-16.360
201816-9.640
201712-10.545
201620-11.645
201525-13.658
201410-6.625
201311-8.579
201232-18.640
201135-14.714
201044-18.710
200928-23.549
200843-17.717
200750-18.735
200648-16.750
200539-18.684
200418-12.600
200328-13.683
200229-10.744
200116-12.571
200020-18.526
199921-8.724
19989-4.692

Calculated from games played between 1954 and 2026 (as of September 22, 2026).