Okumura, Yoshito
Current rating: 1582
Record: 14-12
| Grand Prix Yamagata 2006 (TSP limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 28 | Ruel, Antoine (1930) | Lost 0-2 | -111515 |
| 5sealed | 45 | Imai, Takashi (1564) | Won 2-1 | +191534 |
| 6sealed | 26 | Ishii, Taisuke (1750) | Won 2-1 | +221556 |
| 7sealed | 14 | Aridome, Tomohiro (1870) | Lost 1-2 | -121544 |
| 8sealed | 30 | Hirose, Yuuki (1635) | Won 2-0 | +191563 |
| 9draft | 2 | Yasooka, Shota (2060) | Lost 0-2 | -91554 |
| 10draft | 19 | Osanai, Yuuma (1519) | Won 2-1 | +171571 |
| 11draft | 21 | Fujita, Osamu (1906) | Won 2-0 | +241595 |
| 12draft | 1 | Hosono, Yasuto (1547) | Lost 0-2 | -191576 |
| 13draft | 14 | Aridome, Tomohiro (1856) | Won 2-1 | +231599 |
| 14draft | 17 | Sogabe, Ippei (1648) | Lost 0-2 | -171582 |
| top | average opponent: 1753record: 6-5 | new rating: 1582 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 19 | Taniguchi, Manabu (1516) | Lost 1-2 | -181510 |
| 3sealed | 90 | Ito, Hidetoshi (1405) | Lost 0-2 | -201490 |
| 4sealed | 158 | Ueda, Takuya (1463) | Won 2-1 | +171507 |
| 5sealed | 148 | Maruyama, Hiromi (1590) | Won 2-0 | +201527 |
| 6sealed | 73 | Niitani, Nobuhide (1518) | Won 2-0 | +181545 |
| 7sealed | 45 | Yamamoto, Shouhei (1525) | Lost 0-2 | -191526 |
| top | average opponent: 1503record: 3-3 | new rating: 1526 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 6 | Matsumura, Takehiko (1626) | Won 2-0 | +211520 |
| 5sealed | 28 | Masuno, Ryosuke (1558) | Lost 1-2 | -181502 |
| 6sealed | 39 | Shimoji, Ai (1575) | Lost 0-2 | -161486 |
| 7sealed | 77 | Ishihara, Takashi (1693) | Won 2-0 | +211507 |
| 8sealed | 121 | Nakamura, Keisuke (1649) | Won 2-1 | +211528 |
| top | average opponent: 1620record: 3-2 | new rating: 1528 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 241 | Ouchi, Satoru (1500) | Won 2-0 | +181518 |
| 2sealed | 108 | Serata, Kohei (1518) | Won 2-0 | +181536 |
| 3sealed | 11 | Sato, So (1435) | Lost 0-2 | -201516 |
| 4sealed | 118 | Ueda, Katsuya (1582) | Lost 1-2 | -171499 |
| top | average opponent: 1509record: 2-2 | new rating: 1499 | ||