Ookawa, Takumi
Current rating: 1525
Record: 7-6
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 138 | Nagayama, Sou (1589) | Lost 0-2 | -171511 |
| 2sealed | 432 | Tabei, Nobumitsu (1482) | Lost 1-2 | -181493 |
| 3sealed | 520 | Mukai, Shinichi (1386) | Won 2-1 | +161509 |
| 4sealed | 463 | Yamada, Masato1566 (1482) | Won 2-0 | +171526 |
| 5sealed | 313 | Kamiya, Asato (1501) | Won 2-1 | +181544 |
| 6sealed | 259 | Kim, Han-yong (1518) | Lost 0-2 | -191525 |
| average opponent: 1493record: 3-3 | new rating: 1525 | |||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 657 | Matsuda, Yukio (1559) | Lost 1-2 | -171483 |
| 2standard | 753 | Koyama, Kenta (1677) | Won 2-0 | +221505 |
| 3standard | 764 | Nakamura, Kousuke (1571) | Won 2-1 | +191524 |
| 4standard | 634 | Matsuo, Hirokazu (1559) | Won 2-1 | +181542 |
| 5standard | 572 | Miyauchi, Makoto (1779) | Lost 1-2 | -131529 |
| 6standard | 735 | Tanzawa, Masanori (1518) | Won 2-0 | +171546 |
| 7standard | 662 | Sakai, Hiroetsu (1522) | Lost 1-2 | -181528 |
| average opponent: 1598record: 4-3 | new rating: 1528 | |||