Yamauchi, Kouhei
Current rating: 1500
Record: 4-4
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 116 | Kamei, Toru (1411) | Won 2-1 | +161516 |
| 2block | 20 | Sagawa, Yuuki (1500) | Won 2-1 | +181534 |
| 3block | 90 | Jitsukawa, Naofumi (1536) | Lost 1-2 | -181516 |
| 4block | 201 | Fujikura, Iori (1519) | Won 2-0 | +181534 |
| 5block | 81 | Ino, Kentaro (1505) | Won 2-1 | +181552 |
| 6block | 98 | Mouri, Takemasa (1678) | Lost 1-2 | -161536 |
| 7block | 108 | Tanaka, Jun'ichi (1467) | Lost 0-2 | -191517 |
| 8block | 181 | Minami, Masashi (1614) | Lost 0-2 | -171500 |
| average opponent: 1528record: 4-4 | new rating: 1500 | |||