Watai, Yoichiro
Current rating: 1415
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 225 | Tomura, Michiya (1500) | Won 2-0 | +191448 |
| 2sealed | 33 | Miyazaki, Hidetaka (1535) | Lost 1-2 | -161432 |
| 3sealed | 208 | Shimeno, Yu (1468) | Lost 1-2 | -171415 |
| top | average opponent: 1501record: 1-2 | new rating: 1415 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 147 | Imi, Tadakatsu (1500) | Lost 0-2 | -181464 |
| 2sealed | 123 | Yoshioka, Yasuyuki (1482) | Lost 1-2 | -171447 |
| 3sealed | 191 | Kishishita, Kunihiko (1415) | Lost 0-2 | -191428 |
| 4sealed | 193 | Miyashige, Suguru (1447) | Won 2-0 | +181446 |
| 5sealed | 160 | Yoshihara, Katsuji (1465) | Won 2-0 | +191465 |
| 6sealed | 119 | Kris, Takashi (1468) | Lost 1-2 | -181447 |
| 7sealed | 113 | Kondo, Takahito (1465) | Lost 1-2 | -181429 |
| top | average opponent: 1463record: 2-5 | new rating: 1429 | ||
| Grand Prix Kyoto 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 53 | Igawa, Yoshihiro (1518) | Won 2-1 | +181518 |
| 3extended | 103 | Yanagisawa, Tadahiro (1536) | Lost 1-2 | -171501 |
| 4extended | 94 | Ando, Reiji (1447) | Won 2-1 | +171518 |
| 5extended | 133 | Iino, Ryuji (1519) | Lost 0-2 | -181500 |
| 6extended | 158 | Kashiwagi, Tetsuya (1517) | Lost 0-2 | -181482 |
| top | average opponent: 1507record: 2-3 | new rating: 1482 | ||