Go Player Ratings

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Jeong Seojun

Jeong Seojun (정서준) has a rating of 1852, ranked 33 of 340 in korea play. Their highest rating so far is 1934 (January 12, 2024).

Jeong Seojun정서준鄭誓儁
Rating1852
Rank33
1-year change↑19
Peak rating1934
Last 10169-78(6 by default)
2026 record
5-3
Record since 1954
169-78
Win rate
.684

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

Korea ratingsFind a player

Rating history — korea

21 gamesHigh 1912Low 1809
64 gamesHigh 1934Low 1809
145 gamesHigh 1934Low 1738
241 gamesHigh 1934Low 1514

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
July 23, 2026Lee JihyunSG杯 韓国日報 名人戦 Preliminary Final　as White↓11
July 22, 2026Baek ChanheeSG杯 韓国日報 名人戦 Preliminary Round 4　as White↑11
July 20, 2026Choi MyeonghunSG杯 韓国日報 名人戦 Preliminary Round 3　as White↑12
July 18, 2026Lim Eui-hyunSG杯 韓国日報 名人戦 Preliminary Round 2　as White↑3
February 23, 2026Ko GeuntaeSopalkosanol最高棋士決定戦 예선 4회차　as White↓19
February 22, 2026Kim SeongiSopalkosanol最高棋士決定戦 예선 3회차　as White↑8
February 21, 2026Hong Jun-seonSopalkosanol最高棋士決定戦 예선 2회차　as Black↑2
January 5, 2026Lee Joo-youngGS Caltex杯 プロ棋戦 Preliminary Round 1　as White↓29
December 20, 2025Song Minhyuk太白山杯 囲碁オープントーナメント 예선 2회차　as White↓27
October 7, 2025Byun SangilSUPER CUP BADUK OPEN Main Semifinal　as Black↓9
October 6, 2025Choi JaeyoungSUPER CUP BADUK OPEN Main Quarterfinal　as White↑18
October 6, 2025Park YeonghunSUPER CUP BADUK OPEN Main Round of 16　as Black↑14
October 5, 2025Park MingyuSUPER CUP BADUK OPEN Preliminary Final　as Black↑25
October 5, 2025Cho WankyuSUPER CUP BADUK OPEN 예선 2회차　as White↑13
October 5, 2025Choi KyeonghoSUPER CUP BADUK OPEN Main Round of 32　as Black↑12
October 1, 2025Choi YunsangSUPER CUP BADUK OPEN 예선 1회차　as Black↑10
September 26, 2025Kim Hyeongwoo한국바둑리그 3차예선 결승(최종)　as White↓20
September 25, 2025O Yujin한국바둑리그 3차예선 2국　as White↑14
September 23, 2025Kang Jae-woo한국바둑리그 2차예선 3국　as Black↑12
September 23, 2025Song Minhyuk한국바둑리그 2차예선 2국　as Black↑6

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
20265-3.625
202518-8.692
202412-7.632
202334-11.756
202244-9.830
20205-4.556
201913-14.481
201832-18.640
20176-4.600

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