Miyahara, Toshinari
Current rating: 1426
Record: 2-6
| Grand Prix Kobe 2014 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 959 | Chee, Cristerson (1405) | Lost 0-2 | -201462 |
| 2modern | 1134 | Yokoyama, Takaya (1494) | Won 2-0 | +191481 |
| 3modern | 1156 | Sakakuchi, Takashi (1429) | Lost 1-2 | -191462 |
| 4modern | 1195 | Ichikawa, Norikazu (1511) | Lost 0-2 | -171445 |
| 5modern | 1162 | Higashida, Taketo (1412) | Lost 0-2 | -191426 |
| average opponent: 1450record: 1-4 | new rating: 1426 | |||
| Grand Prix Okayama 2004 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 85 | Sakata, Norifumi (1500) | Won 2-0 | +181518 |
| 2extended | 83 | Sawada, Youhei (1518) | Lost 0-2 | -181500 |
| 3extended | 126 | Shibata, Naoki (1480) | Lost 0-2 | -181482 |
| average opponent: 1499record: 1-2 | new rating: 1482 | |||