Oohori, Hirotaka
Current rating: 1578
Record: 6-3
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 236 | Imakawa, Kiyoshi (1371) | Won 2-0 | +161516 |
| 2sealed | 171 | Nii, Masanobu (1540) | Lost 0-2 | -181498 |
| 3sealed | 122 | Sato, Hitoshi (1546) | Won 2-1 | +191517 |
| 4sealed | 116 | Nakao, Munenari (1562) | Won 2-1 | +191536 |
| 5sealed | 125 | Morita, Masahiko (2006) | Won 2-0 | +261562 |
| 6sealed | 30 | Juza, Martin (2027) | Won 2-0 | +261588 |
| 7sealed | 57 | Nakamura, Shuhei (1991) | Lost 1-2 | -111577 |
| 8sealed | 83 | Ashikaga, Masatoshi (1569) | Won 2-1 | +181595 |
| 9sealed | 43 | Sasaki, Yuuta (1648) | Lost 1-2 | -171578 |
| average opponent: 1696record: 6-3 | new rating: 1578 | |||