Kasai, Kouta
Current rating: 1600
Record: 12-7
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 180 | Nakagawa, Tsukasa (1386) | Won 2-0 | +151586 |
| 2sealed | 162 | Ito, Jun (1546) | Won 2-1 | +171603 |
| 3sealed | 44 | Kitagawa, Tomoaki (1541) | Won 2-1 | +171620 |
| 4sealed | 49 | Nonishi, Keiichiro (1679) | Lost 0-2 | -171603 |
| 5sealed | 114 | Yanada, Kenji (1507) | Won 2-0 | +161619 |
| 6sealed | 54 | Suzuki, Yasutomo (1574) | Lost 0-2 | -191600 |
| average opponent: 1539record: 4-2 | new rating: 1600 | |||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 95 | Hirakawa, Kenshiro (1576) | Won 2-1 | +191519 |
| 3block | 6 | Koji, Kazumasa (1614) | Won 2-0 | +201539 |
| 4block | 53 | Kumoda, Kazuhiro (1575) | Won 2-0 | +191558 |
| 5block | 26 | Himura, Makoto (1573) | Won 2-0 | +181576 |
| 6block | 7 | Fujita, Osamu (2009) | Lost 1-2 | -111565 |
| 7block | 54 | Ishimura, Shintaro (1564) | Lost 0-2 | -181547 |
| 8block | 107 | Kobayashi, Masanori(Aichi) (1538) | Won 2-0 | +181565 |
| 9block | 36 | Yokosuka, Tomohiro (1634) | Lost 0-2 | -161549 |
| 10block | 68 | Fukai, Akihiro (1540) | Won 2-1 | +171566 |
| 11block | 63 | Akita, Naoto (1577) | Won 2-0 | +191585 |
| 12block | 37 | Takakuwa, Minoru (1610) | Won 2-1 | +181603 |
| 13block | 24 | Maeba, Hideaki (1699) | Lost 1-2 | -161587 |
| 14block | 34 | Suzuki, Takaaki (1708) | Lost 0-2 | -161571 |
| average opponent: 1632record: 8-5 | new rating: 1571 | |||