Kato, Keitaro
Current rating: 1527
Record: 4-3
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 340 | Ihira, Yuuki (1500) | Won 2-1 | +181518 |
| 2extended | 257 | Miyamoto, Hiroya (1517) | Won 2-1 | +181536 |
| 3extended | 46 | Hirata, Minoru (1658) | Lost 0-2 | -161520 |
| 4extended | 299 | Munekata, Tomofumi (1518) | Won 2-1 | +181538 |
| 5extended | 165 | Maegawa, Tooru (1571) | Lost 1-2 | -171521 |
| 6extended | 221 | Oohashi, Toshiya (1630) | Won 2-0 | +201541 |
| 7extended | 143 | Ishii, Hayato (1790) | Lost 0-2 | -141527 |
| average opponent: 1598record: 4-3 | new rating: 1527 | |||