Ogata, Atsushi
Current rating: 1505
Record: 13-13-3
| Grand Prix Kitakyushu 2007 (LRW limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 85 | Tomita, Hiromi (1500) | Lost 1-2 | -181497 |
| 2sealed | 112 | Okumura, Katsuhiko (1422) | Won 2-1 | +171514 |
| 3sealed | 94 | Yagi, Hiroyuki (1576) | Won 2-1 | +191533 |
| 4sealed | 104 | Kawakami, Hiroshi (1565) | Lost 0-2 | -181515 |
| 5sealed | 110 | Nomura, Eiji (1681) | Won 2-0 | +211536 |
| 6sealed | 73 | Shoji, Kenta (1537) | Lost 0-2 | -181518 |
| 7sealed | 91 | Ikeda, Tsuyoshi (1772) | Lost 1-2 | -131505 |
| top | average opponent: 1579record: 3-4 | new rating: 1505 | ||
| Grand Prix Kitakyushu 2005 (extended) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 63 | Kubo, Tadayoshi (1471) | Lost 1-2 | -191499 |
| 2extended | 82 | Ihara, Keita (1481) | Won 2-1 | +181517 |
| 3extended | 63 | Kishida, Hirokazu (1415) | Lost 0-2 | -201497 |
| 4extended | 104 | Saitou, Kazuya (1406) | Lost 0-2 | -201477 |
| 5extended | 113 | Sugiura, Kiyohiro (1455) | Won 2-1 | +181495 |
| 6extended | 100 | Kise, Masato (1615) | Won 2-1 | +201515 |
| top | average opponent: 1474record: 3-3 | new rating: 1515 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 65 | Tokuishi, Yuusuke (1500) | Draw 1-1 | +11480 |
| 2sealed | 102 | Iwai, Takanori (1390) | Won 2-0 | +161496 |
| 3sealed | 63 | Fujimoto, Mikio (1656) | Won 2-1 | +211517 |
| 4sealed | 66 | Abe, Ryou (1647) | Won 2-1 | +201537 |
| 5sealed | 32 | Miyaoka, Hiroyuki (1470) | Lost 0-2 | -191518 |
| top | average opponent: 1533record: 3-1-1 | new rating: 1518 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 38 | Nakamura, Kiyonari (1545) | Won 2-0 | +191535 |
| 2extended | 44 | Eura, Hiroki (1539) | Lost 0-2 | -181517 |
| 3extended | 140 | Takahashi, Katsuhiko (1497) | Lost 0-1 | -191498 |
| 4extended | 145 | Murata, Shuta (1482) | Lost 0-2 | -181480 |
| 5extended | 170 | Aoki, Yasunori (1463) | Lost 1-2 | -181462 |
| 6extended | 149 | Akita, Naoto (1436) | Won 2-1 | +171479 |
| top | average opponent: 1494record: 2-4 | new rating: 1479 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 50 | Okada, Masami (1446) | Draw 1-1 | -11499 |
| 2extended | 102 | Itou, Shin (1515) | Draw 1-1 | 01499 |
| 3extended | 150 | Yamada, Yasuo (1467) | Won 2-1 | +181517 |
| 4extended | 122 | Suzuya, Masashi (1467) | Won 2-0 | +171534 |
| 5extended | 84 | Ayama, Takashi (1556) | Lost 0-2 | -181516 |
| top | average opponent: 1490record: 2-1-2 | new rating: 1516 | ||