Yamato, Masaru
Current rating: 1428
Record: 1-5
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 90 | Imamura, Taichirou (1500) | Lost 0-2 | -181482 |
| 2extended | 111 | Takahara, Yasuaki (1447) | Won 2-1 | +171499 |
| 3extended | 82 | Tanaka, Toshifumi (1499) | Lost 1-2 | -181481 |
| 4extended | 152 | Takahama, Norimasa (1501) | Lost 0-2 | -171464 |
| 5extended | 162 | Maruyama, Kentarou (1467) | Lost 1-2 | -181446 |
| 6extended | 153 | Masamura, Ayumu (1433) | Lost 0-2 | -181428 |
| average opponent: 1474record: 1-5 | new rating: 1428 | |||