Katayama, Hironori
Current rating: 1501
Record: 1-1
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 44 | Isomoto, Hirofumi (1598) | Won 2-0 | +201520 |
| 2sealed | 110 | Matsumoto, Yuki1423 (1466) | Lost 0-2 | -191501 |
| average opponent: 1532record: 1-1 | new rating: 1501 | |||