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Lee Jaesung

Lee Jaesung (이재성) has a rating of 1784, ranked 52 of 340 in korea play. Their highest rating so far is 1926 (August 17, 2025).

Lee Jaesung이재성李宰成
Rating1784
Rank52
1-year change↓38
Peak rating1926
Last 10218-193(6 by default)
2026 record
16-16
Record since 1954
218-193
Win rate
.530

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

Korea ratingsFind a player

Rating history — korea

56 gamesHigh 1832Low 1730
178 gamesHigh 1926Low 1629
305 gamesHigh 1926Low 1618
405 gamesHigh 1926Low 1513

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
September 11, 2026An Jungki한국 프로기사협회 리그 Group 1　as Black↓22
September 4, 2026Song Gyusang한국 프로기사협회 리그 Main Group 1　as White↓16
July 22, 2026Lee JihyunSG杯 韓国日報 名人戦 Preliminary Round 4　as White↓10
July 21, 2026Ak JiwooSG杯 韓国日報 名人戦 Preliminary Round 3　as Black↑2
July 18, 2026Han ChongjinSG杯 韓国日報 名人戦 Preliminary Round 2　as Black↑12
June 30, 2026Park Jinsol한국 프로기사협회 리그 Group 1　as Black↑15
June 29, 2026Choi Jaeyoung한국 프로기사협회 리그 Group 1　as White↑25
June 24, 2026Park Jihyun한국 프로기사협회 리그 Group 1　as White↑12
June 24, 2026Kang Seungmin한국 프로기사협회 리그 Group 1　as White↓13
June 18, 2026Kim Seunggu한국 프로기사협회 리그 Group 1　as Black↓19
June 5, 2026Kim Seungjin한국 프로기사협회 리그 Group 1　as White↑20
May 19, 2026Lee Wonyoung한국 프로기사협회 리그 Group 1　as White↓10
May 6, 2026Park Mingyu한국 프로기사협회 리그 Main Group 1　as White↓9
April 30, 2026Song Jihoon한국 프로기사협회 리그 Group 1　as Black↓7
April 23, 2026An Sungjun한국 프로기사협회 리그 Group 1　as Black↓10
April 23, 2026Song Gyusang한국 프로기사협회 리그 Group 1　as Black↑17
April 22, 2026Park Hamin한국 프로기사협회 리그 Group 1　as White↓10
April 16, 2026Yun Junsang한국 프로기사협회 리그 Group 1　as White↓20
April 9, 2026Mok Jinseok한국 프로기사협회 리그 Group 1　as Black↑12
March 31, 2026An Jungki한국 프로기사협회 리그 Group 1　as Black↑9

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

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
202616-16.500
202537-33.529
202424-28.462
202329-26.527
202240-36.526
202136-33.522
202032-19.627
20194-2.667

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