Kumagai, Takuo
Current rating: 1486
Record: 2-3
| Grand Prix Yamagata 2006 (TSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 93 | Hirose, Tatsuya (1500) | Won 2-0 | +181518 |
| 2sealed | 65 | Nikkuni, Fumihito (1652) | Won 2-1 | +201538 |
| 3sealed | 34 | Ooshima, Kunihiro (1525) | Lost 1-2 | -181520 |
| 4sealed | 100 | Yamaguchi, Shinya (1584) | Lost 0-2 | -171503 |
| 5sealed | 98 | Yamada, Tsutomu (1547) | Lost 1-2 | -171486 |
| average opponent: 1562record: 2-3 | new rating: 1486 | |||