Ratings
2009-07-26: 14th KoA Championships 2009(Korea)
2009-05-31: 13rd KoA Championships 2009(Korea)
| LEE Kwangwook | 53-11 | YU Yoseop |
| YU Yoseop | 51-13 | SEO Youjoon |
| YU Yoseop | 64-00 | LEE Geuncheol |
| OH Joungmok | 22-42 | YU Yoseop |
| HWANG Yoonjoo | 00-64 | YU Yoseop |
| YU Yoseop | 42-22 | LEE Kwangwook |
| LEE Kwangwook | 29-35 | YU Yoseop |
| YU Yoseop | 42-22 | OH Joungmok |
| LEE Kwangwook | 18-46 | YU Yoseop |
| YU Yoseop | 49-15 | HWANG Yoonjoo |
| HA Seungsup | 31-33 | YU Yoseop |
| YU Yoseop | 21-43 | HONG Seonguk |
| YU Yoseop | 26-38 | HONG Seonguk |
| HONG Seonguk | 28-36 | YU Yoseop |
| YU Yoseop | 27-37 | HONG Seonguk |
2008-05-25: 10th Korean Othello Open(Korea)
| YU Yoseop | lost to | LEE Kwangwook |
| KIM Kwansoo | won against | YU Yoseop |
| JUNG Taejoon | won against | YU Yoseop |
| YU Yoseop | lost to | OH Joungmok |
| HA Seungsup | lost to | YU Yoseop |
2007-11-29 → 2007-12-01: WOC 2007 (Athens)(World)
2007-05-21: 7th Korean Othello Open(Korea)
2007-03-25: 6th Korean Othello Open(Korea)
2007-01-22: 2007 South Korean Championship(Korea)
| YU Yoseop | 31-33 | KRAIKOKIT Piamrat |
| TURNER Alison | 02-62 | YU Yoseop |
| YU Yoseop | 61-03 | GAERTNER Joerg |
| BARRE Sebastien | 36-28 | YU Yoseop |
| YU Yoseop | 31-33 | CUPIAL Milosz |
| TATSUMI-IIJIMA Yukiko | 30-34 | YU Yoseop |
| YU Yoseop | 37-27 | BERGLUND Caroline |
| OHNO Tomohiro | 51-13 | YU Yoseop |
| YU Yoseop | 34-30 | SEO Youjoon |
| YU Yoseop | 32-32 | SCHOTTE Tom |
| SHIFMAN Ilya | 37-27 | YU Yoseop |
| NIELSEN Kim J. | 07-57 | YU Yoseop |
| YU Yoseop | 40-24 | GARDEBRINK Christian |
| YU Yoseop | won against | HA Seungsup |
| LEE Chunae | lost to | YU Yoseop |
| JUNG Taejoon | won against | YU Yoseop |
| YU Yoseop | won against | KIM Yeongdae |
| YU Yoseop | lost to | OH Joungmok |
| OH Joungmok | won against | YU Yoseop |
| YU Yoseop | won against | SEO Youjoon |
| OH Joungmok | 32-32 | YU Yoseop |
| YU Yoseop | won against | HONG Seonguk |
| LEE Jiseung | won against | YU Yoseop |
| YU Yoseop | won against | HA Seungsup |
| OH Joungmok | won against | YU Yoseop |
| YU Yoseop | lost to | OH Joungmok |
| LEE Soomyung | lost to | YU Yoseop |
| YU Yoseop | won against | LEE Jiseung |
| LIM Seongjun | lost to | YU Yoseop |
| YU Yoseop | won against | LEE Taeeung |
| KIM Yeongdae | lost to | YU Yoseop |
| YU Yoseop | won against | LIM Seongjun |