Jung, Si Yong
Current rating: 1465
Record: 3-5
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Ikeda, Eiji (1500) | Lost 1-2 | -181482 |
| 2sealed | 148 | Ishiyama, Hiroki (1494) | Lost 1-2 | -181464 |
| 3sealed | 211 | Kanno, Tadashi (1468) | Lost 1-2 | -181446 |
| 4sealed | 238 | Tsuchiuchi, Jun (1445) | Won 2-0 | +181464 |
| 5sealed | 194 | Matsumura, Takehiko (1498) | Lost 0-2 | -171447 |
| 6sealed | 181 | Sugi, Taiji (1412) | Won 2-1 | +171464 |
| 7sealed | 138 | Ooshima, Kunihiro (1461) | Won 2-0 | +181482 |
| 8sealed | 106 | Hamaoka, Shuuhei (1514) | Lost 1-2 | -171465 |
| average opponent: 1474record: 3-5 | new rating: 1465 | |||