Tamahashi, Naoki
Current rating: 1485
Record: 2-3
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 76 | Kanazawa, Ayanobu (1599) | Won 2-0 | +201520 |
| 2standard | 199 | Shimoyama, Tsunahiro (1517) | Lost 0-2 | -181502 |
| 3standard | 147 | Matsumura, Hideyuki (1407) | Won 2-0 | +161518 |
| 4standard | 214 | Kyo, Ifu (1668) | Lost 1-2 | -151503 |
| 5standard | 292 | Takagi, Shouta (1501) | Lost 1-2 | -181485 |
| average opponent: 1539record: 2-3 | new rating: 1485 | |||