Oohira, Kenta
Current rating: 1400
Record: 16-24
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1363 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 165 | Matsui, Hiroyuki (1501) | Lost 0-2 | -161347 |
| 2standard | 349 | Sato, Makoto (1500) | Lost 1-2 | -151332 |
| 3standard | 358 | Saitou, Kazuya (1383) | Won 2-0 | +191351 |
| 4standard | 365 | Yasukawa, Kazuhide (1605) | Won 2-1 | +221373 |
| 5standard | 266 | Matsushima, Kouji (1463) | Won 2-0 | +201393 |
| 6standard | 156 | Sawada, Ken (1481) | Lost 1-2 | -161377 |
| 7standard | 224 | Ishibashi, Kazuma (1495) | Won 2-0 | +201397 |
| 8standard | 128 | Tsuruta, Takayuki (1476) | Won 2-1 | +191416 |
| 9standard | 114 | Matumura, Kyohei (1527) | Lost 0-2 | -161400 |
| top | average opponent: 1492record: 5-4 | new rating: 1400 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 75 | Inoue, Masashi(Nara) (1500) | Lost 0-2 | -171443 |
| 5standard | 53 | Okada, Hiroaki(Shiga) (1527) | Lost 1-2 | -171426 |
| 6standard | 84 | Takahashi, Junya (1568) | Lost 1-2 | -151411 |
| 7standard | 184 | Tanaka, Akira (1506) | Lost 0-2 | -161395 |
| 8standard | 167 | Hirose, Kenji (1495) | Lost 0-2 | -171378 |
| 9standard | 180 | Kabeshita, Yoshito (1503) | Lost 1-2 | -151363 |
| top | average opponent: 1516record: 0-6 | new rating: 1363 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 181 | Yamada, Tsutomu (1615) | Lost 1-2 | -161457 |
| 2sealed | 170 | Sakata, Masashi (1482) | Lost 0-2 | -171440 |
| 3sealed | 238 | Okajima, Kuninori (1464) | Won 2-0 | +181458 |
| 4sealed | 208 | Lopez, Nazario (1455) | Won 2-1 | +181476 |
| 5sealed | 146 | Saito, Takanobu (1480) | Lost 1-2 | -181458 |
| 6sealed | 150 | Koganemaru, Akinori (1482) | Won 2-1 | +191477 |
| 7sealed | 107 | Sutou, Takuo (1550) | Lost 1-2 | -171460 |
| top | average opponent: 1504record: 3-4 | new rating: 1460 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 133 | Kosugi, Souichi (1500) | Won 2-1 | +191483 |
| 2block | 98 | Satou, Yuuryou (1511) | Lost 1-2 | -171466 |
| 3block | 174 | Kanesiro, Yasuaki (1482) | Won 2-1 | +181484 |
| 4block | 231 | Umeda, Hisashi (1488) | Won 2-1 | +181502 |
| 5block | 130 | Murata, Kouji (1599) | Won 2-1 | +201522 |
| 6block | 87 | Kumagai, Shinichi (1709) | Lost 1-2 | -151507 |
| 7block | 161 | Date, Tsutomu (1541) | Won 2-0 | +191526 |
| 8block | 91 | Takayama, Kenta (1536) | Lost 1-2 | -181508 |
| 9block | 104 | Mizutani, Naoki (1504) | Lost 1-2 | -181490 |
| 10block | 119 | Takahasi, Tooru (1524) | Won 2-1 | +181508 |
| 11block | 103 | Nakamura, Hajime (1521) | Lost 0-2 | -171491 |
| 12block | 102 | Izumi, Shinji (1501) | Lost 0-2 | -181473 |
| top | average opponent: 1535record: 6-6 | new rating: 1473 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 215 | Kawakami, Masahito (1500) | Lost 0-2 | -181482 |
| 2sealed | 278 | Oomura, Yasuhira (1482) | Won 2-1 | +181500 |
| 3sealed | 127 | Nakamura, Kazuo (1501) | Lost 0-2 | -181482 |
| 4sealed | 228 | Fukuda, Takashi (1470) | Lost 0-2 | -181464 |
| 5sealed | 227 | Ikeda, Takashi (1500) | Won 2-0 | +181482 |
| 6sealed | 189 | Mishima, Hiroyuki (1482) | Lost 0-2 | -181464 |
| top | average opponent: 1489record: 2-4 | new rating: 1464 | ||