Hamada, Seiichirou
Current rating: 1519
Record: 6-5-1
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 822 | Yoshinaga, Mitsuteru (1733) | Won 2-1 | +221520 |
| 2legacy | 557 | Yamasita, Akinori (1502) | Lost 0-2 | -181502 |
| 3legacy | 884 | Dan, Akira (1531) | Draw 0-0 | 01502 |
| 4legacy | 816 | Maeda, Kouzo (1502) | Won 2-0 | +181520 |
| 5legacy | 715 | Kobayashi, Yutarou (1455) | Won 2-1 | +171537 |
| 6legacy | 639 | Puissant, Remi (1541) | Lost 0-2 | -181519 |
| average opponent: 1544record: 3-2-1 | new rating: 1519 | |||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 713 | Sumitomo, Hiroyuki (1522) | Lost 0-2 | -181482 |
| 2sealed | 740 | Hirose, Yutaka (1431) | Won 2-0 | +171499 |
| 3sealed | 720 | Nasu, Kenichi (1432) | Lost 1-2 | -191480 |
| 4sealed | 879 | Nakasato, Hiroki (1407) | Won 2-0 | +171497 |
| 5sealed | 712 | Takaaki, Imai (1503) | Won 2-1 | +181515 |
| 6sealed | 712 | Nakaoka, Koshiro (1552) | Lost 0-2 | -171498 |
| average opponent: 1474record: 3-3 | new rating: 1498 | |||