Yoon Seong-Won
Place: Seoul, Republic of Korea
Rating: 2117.12, Std: 288.15, Rank: -
First game: 2006-08-15, Last game: 2018-07-22
Top rating: 2117.12 (2018-07-22)
Games: 20, Wins: 6, Draws: 3, Losses: 11
Gy1: 0, Gy2: 0, Gy5: 0
| The 3rd Korea Tournament | ||||
|---|---|---|---|---|
| Date | 2018-07-22 | Rating | 2117.12 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Draw | Han Tae-ho | 2332.20 |
| 2 | White | Win | Choi Chang-in | 1740.25 |
| 3 | White | Win | Han Jin-ea | 1891.32 |
| SQF | White | Loss | Choi Eun-seo | 2168.05 |
| Korea-Estonia Friendship Tournament | ||||
| Date | 2017-07-30 | Rating | 2110.59 | |
| Round | Color | Result | Opponent | |
| 4 | White | Win | Lee Sae-gang | 2079.90 |
| 5 | Black | Loss |  Soosõrv Ants | 2738.42 |
| The 6th Best of Best Match | ||||
| Date | 2006-12-03 | Rating | 1853.56 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Chang Jae-Won | 2023.05 |
| 2 | Black | Win | Byeon En-Seob | 1793.01 |
| 3 | White | Loss | Kim Su-chan | 2142.12 |
| 4 | Black | Loss | Choi Yun Suk | 2287.44 |
| 5 | White | Loss | Kim Byoung-Jun | 2493.08 |
| The 19th Ranking Tournament | ||||
| Date | 2006-11-26 | Rating | 1852.41 | |
| Round | Color | Result | Opponent | |
| 3 | Black | Win | Park Jong-Seon | 1655.52 |
| Asian Championship 2006 | ||||
| Date | 2006-08-15 | Rating | 1832.76 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss |  Okabe Hiroshi | 2598.62 |
| 2 | Black | Loss | Kuramoto Hideharu | 1878.21 |
| 3 | Black | Loss | Chang Kyoung-Jun | 1961.34 |
| 4 | White | Draw | Cha Jee-Young | 1704.10 |
| 5 | Black | Loss | Kwon Jae-Woo | 1894.05 |
| 6 | Black | Draw | Kang Bo-Ra | 1748.92 |
| 7 | White | Loss | Chang Jae-Won | 2019.45 |
| 8 | Black | Loss | Kubo Izumi | 2100.62 |