Hirata, Tatsuya
Current rating: 1448
Record: 2-5
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Kunugi, Ryou (1431) | Lost 0-2 | -191464 |
| 2sealed | 215 | Otou, Yuuki (1538) | Lost 0-2 | -161448 |
| average opponent: 1484record: 0-2 | new rating: 1448 | |||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 195 | Sakaguchi, Naoki (1500) | Lost 0-2 | -181482 |
| 2block | 281 | Sato, Ken (1483) | Won 2-1 | +181500 |
| 3block | 286 | Kaji, Tomohiro (1625) | Lost 0-2 | -161484 |
| 4block | 314 | Takahashi, Taro (1482) | Won 2-1 | +181502 |
| 5block | 255 | Ohta, Shinji (1444) | Lost 1-2 | -191483 |
| average opponent: 1507record: 2-3 | new rating: 1483 | |||