Kawaguchi, Masashi
Current rating: 1400
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 165 | Fujimoto, Mikio (1641) | Lost 0-2 | -141396 |
| 3sealed | 121 | Ogawa, Syunsuke (1627) | Lost 1-2 | -141382 |
| 4sealed | 247 | Aoki, Masayuki (1411) | Won 2-1 | +181400 |
| top | average opponent: 1560record: 1-2 | new rating: 1400 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 107 | Mihara, Takumi (1411) | Won 2-1 | +171482 |
| 2block | 157 | Suzuki, Takahiro (1500) | Lost 0-2 | -181464 |
| 3block | 165 | Wada, Yuta (1395) | Lost 1-2 | -191445 |
| 4block | 330 | Tamai, Katsuyoshi (1456) | Lost 1-2 | -181427 |
| 5block | 353 | Akiyama, Hayato (1462) | Lost 1-2 | -171410 |
| top | average opponent: 1445record: 1-4 | new rating: 1410 | ||
| Grand Prix Sapporo 2002 (Odyssey block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 151 | Koiwai, Takashi (1500) | Won 2-0 | +181518 |
| 2block | 110 | Suzuki, Masayuki (1518) | Lost 0-2 | -181500 |
| 3block | 124 | Kumagai, Shinichi (1534) | Lost 1-2 | -171483 |
| 4block | 175 | Asano, Yoshi (1480) | Lost 1-2 | -181465 |
| top | average opponent: 1508record: 1-3 | new rating: 1465 | ||