Yamaguchi, Yasutaka
Current rating: 1466
Record: 2-4-2
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 135 | Ishii, Tomokazu (1502) | Won 2-1 | +181518 |
| 2block | 115 | Douyama, Tsuyoshi (1746) | Lost 0-2 | -141504 |
| 3block | 235 | Ichikawa, Tatsuya (1500) | Lost 0-2 | -181486 |
| 4block | 275 | Aizawa, Keiji (1482) | Draw 1-1 | 01486 |
| 5block | 307 | Tanahashi, Masayasu (1480) | Lost 1-2 | -181468 |
| 6block | 314 | Mochiduki, Kouya (1467) | Lost 0-2 | -181450 |
| 7block | 289 | Endo, Tadashi (1445) | Draw 1-1 | 01450 |
| 8block | 257 | Oosaki, Masakazu (1342) | Won 2-1 | +161466 |
| average opponent: 1496record: 2-4-2 | new rating: 1466 | |||