Aya, Keisuke
Current rating: 1439
Record: 3-7
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 9 | Miura, Hiroyuki (1525) | Lost 0-2 | -171452 |
| 5sealed | 68 | Kikuchi, Yuuji (1524) | Won 2-1 | +201472 |
| 6sealed | 58 | Hanada, Yuu (1517) | Lost 0-2 | -181454 |
| 7sealed | 72 | Kudo, Koichi (1567) | Lost 1-2 | -151439 |
| average opponent: 1533record: 1-3 | new rating: 1439 | |||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 61 | Tominaga, Makoto (1500) | Lost 1-2 | -181482 |
| 4block | 386 | Ishikura, Nobuyuki (1582) | Lost 1-2 | -161466 |
| 5block | 381 | Tanaka, Toshihiro (1500) | Won 2-0 | +181484 |
| 6block | 217 | Tanaka, Toshifumi (1518) | Won 2-0 | +191503 |
| 7block | 201 | Yokoyama, Shigehisa (1584) | Lost 1-2 | -161487 |
| 8block | 241 | Ueno, Motohiro (1532) | Lost 0-2 | -181469 |
| average opponent: 1536record: 2-4 | new rating: 1469 | |||