Ooshima, Koufuku
Current rating: 1486
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 222 | Wada, Akihiro (1500) | Won 2-0 | +181480 |
| 2standard | 85 | Kawashita, Makoto (1520) | Won 2-1 | +191499 |
| 3standard | 68 | Se, Atsuo (1684) | Won 2-0 | +211520 |
| 4standard | 115 | Yuuji O., (1500) | Lost 0-2 | -181502 |
| 5standard | 63 | Doi, Fumiaki (1627) | Lost 1-2 | -161486 |
| top | average opponent: 1566record: 3-2 | new rating: 1486 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 254 | Tsuboi, Shuu (1500) | Won 2-0 | +191480 |
| 2standard | 159 | Itou, Takanori (1413) | Lost 1-2 | -191461 |
| 3standard | 180 | Kishi, Masafumi (1472) | Won 2-1 | +181479 |
| 4standard | 242 | Sawada, Ken (1483) | Lost 1-2 | -181461 |
| 5standard | 210 | Honda, Masaya (1462) | Won 2-1 | +181479 |
| 6standard | 152 | Hisaki, Yuu (1504) | Lost 1-2 | -171462 |
| top | average opponent: 1472record: 3-3 | new rating: 1462 | ||
| Grand Prix Kitakyushu 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 56 | Saitou, Shintaro (1500) | Lost 0-2 | -181482 |
| 2extended | 103 | Suzuki, Ryuuichi (1408) | Lost 0-2 | -191463 |
| 3extended | 108 | Kabeshita, Yoshito (1461) | Won 2-0 | +181481 |
| 4extended | 112 | Nakamura, Takehiro (1449) | Draw 1-1 | -11480 |
| 5extended | 105 | Yamada, Chiaki (1446) | Lost 1-2 | -191461 |
| 6extended | 102 | Tanaka, Shogo (1483) | Won 2-0 | +191480 |
| 7extended | 84 | Sugiura, Kiyohiro (1455) | Lost 0-2 | -191461 |
| top | average opponent: 1457record: 2-4-1 | new rating: 1461 | ||