An Sungjoon
Follow
434
Games
50%
Win rate
1
Titles
31–25
2025 Record
55.4%
Win Rate
56
Games
4W
Best Streak
As Black: 18/31 (58%)
As White: 13/25 (52%)
Key rivalries
Shin Jinseo
0–16
Kang Dongyun
5–9
Park Junghwan
4–10
Byun Sangil
6–6
Choi Cheolhan
4–8
Shin Minjun
5–6
Tournaments
Korean Baduk League
14W–10L
24 games
2025-12-19
League · Round 6 · Winners' Playoff, Round 2 · Winners' Playoff, Round 1 · Playoffs · League Playoffs · Round 4
GS Caltex Cup #30
Runner-up
6W–4L
10 games
2025-07-22
Final, Game 3 · Final, Game 2 · Final, Game 1 · Losers' Section, Final · Losers' Section, Round 5 · Losers' Section, Round 4 · Losers' Section, Round 3 · Losers' Section, Round 2 · Losers' Section, Round 1 · Round 1
Kuksu Mountains International Baduk Championship
Runner-up
3W–2L
5 games
2025-10-02
Final · Semi-final · Round 1 · Round 2 · Korean qualifier
Beihai Xinyi Cup #1
Out
2W–1L
3 games
2025-04-12
Round 3 · Round 2 · Round 1
Maxim Cup #26
Out
2W–1L
3 games
2025-03-18
Round 3 · Round 2 · Round 1
Nongshim Cup #27
Out
2W–1L
3 games
2025-11-24
Game 8 · Korean qualifier
Korea Baduk Association President's Cup
Out
1W–1L
2 games
2025-08-16
Round 2 · Round 1
HanaBank MZ Supermatch
Out
0W–1L
1 game
2025-02-05
Preliminaries
KB Baduk League
1W–0L
1 game
2025-12-11
League
LG Cup World Baduk Championship #30
Out
0W–1L
1 game
2025-05-19
Round 1
Quzhou Lanke Cup World Open #3
Out
0W–1L
1 game
2025-07-02
Round 2
Samsung Cup World Open #30
Out
0W–1L
1 game
2025-11-09
Round 1
Shinhan Bank World Baduk Immortal
0W–1L
1 game
2025-12-24
Round 1
Key Opponents in 2025
| Opponent | Games | Record | Split |
|---|---|---|---|
| Yi Chi-hyeon (m) 🇰🇷 | 6 | 3–3 | |
| Byun Sangil 🇰🇷 | 5 | 4–1 | |
| Shin Jinseo 🇰🇷 | 4 | 0–4 | |
| Kang Dongyun 🇰🇷 | 3 | 2–1 | |
| Yang Kaiwen 🇨🇳 | 2 | 0–2 | |
| Park Junghwan 🇰🇷 | 2 | 2–0 | |
| Na Hyeon 🇰🇷 | 2 | 1–1 | |
| Shin Minjun 🇰🇷 | 2 | 2–0 | |
| Kim Chin-hwi 🇰🇷 | 2 | 2–0 | |
| Xu Haohong 🇹🇼 | 1 | 1–0 |
Games
| Date | Opponent | Color | Result | Event | Round |
|---|---|---|---|---|---|
| 2025-12-24 | Yang Kaiwen | W | B+R | Shinhan Bank World Baduk Immortal | Round 1 |
| 2025-12-19 | Xu Haohong | B | B+R | Korean Baduk League | League |
| 2025-12-11 | Park Junghwan | W | W+1.5 | KB Baduk League | League |
| 2025-12-07 | Byun Sangil | W | W+R | Korean Baduk League | Round 6 |
| 2025-11-30 | Kang Dongyun | B | B+R | Korean Baduk League | League |
| 2025-11-24 | Yang Kaiwen | B | W+R | Nongshim Cup | Game 8 |
| 2025-11-09 | Yi Chi-hyeon (m) | B | W+R | Samsung Cup World Open | Round 1 |
| 2025-11-06 | Yi Ch'ang-seok | W | B+7.5 | Korean Baduk League | League |
| 2025-11-01 | Na Hyeon | W | B+R | Korean Baduk League | League |
| 2025-10-25 | Yi Chae-seong | B | B+R | Korean Baduk League | League |
| 2025-10-02 | Wang Xinghao | W | B+1.5 | Kuksu Mountains International Baduk Championship | Final |
| 2025-10-01 | Byun Sangil | W | W+R | Kuksu Mountains International Baduk Championship | Semi-final |
| 2025-09-30 | Fukuoka Kotaro | W | W+R | Kuksu Mountains International Baduk Championship | Round 1 |
| 2025-09-30 | Kyo Kagen | B | B+R | Kuksu Mountains International Baduk Championship | Round 2 |
| 2025-08-16 | Pak Chi-hyeon | B | W+R | Korea Baduk Association President's Cup | Round 2 |
| 2025-08-16 | Hong Mu-chin | W | W+R | Korea Baduk Association President's Cup | Round 1 |
| 2025-07-28 | Ryu Min-hyeong | W | B+2.5 | Kuksu Mountains International Baduk Championship | Korean qualifier |
| 2025-07-22 | Shin Jinseo | B | W+R | GS Caltex Cup | Final, Game 3 |
| 2025-07-20 | Shin Jinseo | W | B+R | GS Caltex Cup | Final, Game 2 |
| 2025-07-19 | Shin Jinseo | B | W+R | GS Caltex Cup | Final, Game 1 |
| 2025-07-17 | Shin Minjun | W | W+R | Nongshim Cup | Korean qualifier |
| 2025-07-15 | Byun Sangil | B | B+R | Nongshim Cup | Korean qualifier |
| 2025-07-02 | Mi Yuting | B | W+R | Quzhou Lanke Cup World Open | Round 2 |
| 2025-06-17 | Kim Chin-hwi | W | W+R | GS Caltex Cup | Losers' Section, Final |
| 2025-06-16 | Byun Sangil | B | B+R | GS Caltex Cup | Losers' Section, Round 5 |
| 2025-06-04 | Yi Chi-hyeon (m) | B | B+R | GS Caltex Cup | Losers' Section, Round 4 |
| 2025-05-29 | Park Junghwan | W | W+R | GS Caltex Cup | Losers' Section, Round 3 |
| 2025-05-19 | Cho U | B | W+R | LG Cup World Baduk Championship | Round 1 |
| 2025-05-09 | Kang Dongyun | B | B+2.5 | GS Caltex Cup | Losers' Section, Round 2 |
| 2025-05-04 | Kang Dongyun | B | W+1.5 | Korean Baduk League | Winners' Playoff, Round 2 |
| 2025-05-03 | Pak Min-kyu | W | B+R | Korean Baduk League | Winners' Playoff, Round 1 |
| 2025-05-02 | Yi Weon-yeong | B | B+R | Korean Baduk League | Playoffs |
| 2025-05-01 | Yi Chi-hyeon (m) | B | B+R | Korean Baduk League | League Playoffs |
| 2025-04-24 | Yi Chi-hyeon (m) | B | W+R | Korean Baduk League | Playoffs |
| 2025-04-23 | An Cheong-ki | B | B+R | Korean Baduk League | Playoffs |
| 2025-04-22 | Han U-chin | B | B+R | Korean Baduk League | Playoffs |
| 2025-04-12 | Tan Xiao | W | B+R | Beihai Xinyi Cup | Round 3 |
| 2025-04-11 | Zhou Zhenyu | W | W+0.5 | Beihai Xinyi Cup | Round 2 |
| 2025-04-10 | Li Xuanhao | W | W+R | Beihai Xinyi Cup | Round 1 |
| 2025-04-03 | Weon Seong-chin | W | B+0.5 | Korean Baduk League | |
| 2025-04-02 | Kim Sang-ch'eon | B | B+R | GS Caltex Cup | Losers' Section, Round 1 |
| 2025-03-23 | Ch'oe Chae-yeong | B | B+R | Korean Baduk League | |
| 2025-03-18 | Byun Sangil | B | W+R | Maxim Cup | Round 3 |
| 2025-03-16 | Yi Chi-hyeon (m) | B | B+R | Korean Baduk League | |
| 2025-03-08 | Hong Seong-chi | B | W+R | Korean Baduk League | |
| 2025-03-06 | Shin Jinseo | B | W+R | GS Caltex Cup | Round 1 |
| 2025-02-27 | Kang Seung-min | W | B+R | Korean Baduk League | |
| 2025-02-23 | Shin Minjun | W | W+R | Korean Baduk League | |
| 2025-02-17 | Na Hyeon | W | W+R | Maxim Cup | Round 2 |
| 2025-02-14 | Pak Ha-min | B | B+R | Korean Baduk League | |
| 2025-02-05 | O Yu-chin | W | B+R | HanaBank MZ Supermatch | Preliminaries |
| 2025-01-24 | Pak Chong-hun | B | B+2.5 | Korean Baduk League | |
| 2025-01-16 | Kim Chin-hwi | B | B+R | Korean Baduk League | |
| 2025-01-09 | Yi Chi-hyeon (m) | B | W+R | Korean Baduk League | |
| 2025-01-07 | An Kuk-hyeon | W | W+R | Maxim Cup | Round 1 |
| 2025-01-03 | Pak Sang-chin | W | B+R | Korean Baduk League | Round 4 |