Ooshima, Kazuyasu
Current rating: 1498
Record: 13-14
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 951 | Yamazaki, Sumio (1500) | Won 2-0 | +181535 |
| 2sealed | 935 | Yakushi, Hideki (1469) | Lost 1-2 | -201515 |
| 3sealed | 1238 | Oosawa, Takayuki (1499) | Lost 1-2 | -181497 |
| 4sealed | 1219 | Kudou, Toshio (1533) | Won 2-1 | +191516 |
| 5sealed | 1087 | Sakaguchi, Yoichi (1511) | Lost 0-2 | -181498 |
| top | average opponent: 1503record: 2-3 | new rating: 1498 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 47 | Kramer, Donald (1500) | Won 2-0 | +181519 |
| 2sealed | 193 | Hatashita, Hiroaki (1500) | Lost 1-2 | -181501 |
| 3sealed | 233 | Masuda, Kou (1481) | Lost 1-2 | -191482 |
| 4sealed | 458 | Sugimura, Yoshiyasu (1606) | Won 2-1 | +211503 |
| 5sealed | 379 | Suzuki, Koudai (1500) | Won 2-0 | +171520 |
| 6sealed | 262 | Sakiya, Watanabe (1502) | Won 2-1 | +181538 |
| 7sealed | 133 | Tateno, Tomoaki (1356) | Lost 0-2 | -211517 |
| top | average opponent: 1492record: 4-3 | new rating: 1517 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 454 | Kanazawa, Yuusuke (1500) | Won 2-1 | +181481 |
| 2modern | 38 | Fujii, Masahiro (1521) | Lost 0-2 | -171464 |
| 3modern | 304 | Saijou, Yuuichi (1539) | Won 2-0 | +201484 |
| 4modern | 411 | Akita, Naoto (1578) | Won 2-1 | +191503 |
| 5modern | 246 | Shoji, Kenta (1700) | Won 2-1 | +221525 |
| 6modern | 88 | Mochizuki, Kouta (1538) | Won 2-1 | +181543 |
| 7modern | 48 | Mori, Katsuhiro (2037) | Lost 0-2 | -101533 |
| 8modern | 81 | Ichikawa, Norikazu (1621) | Lost 0-2 | -161517 |
| 9modern | 198 | Horikawa, Hideaki (1631) | Lost 1-2 | -161501 |
| top | average opponent: 1629record: 5-4 | new rating: 1501 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 121 | Tanaka, Kenichirou (1581) | Won 2-0 | +191519 |
| 2sealed | 237 | Kadono, Satoru (1544) | Won 2-1 | +191538 |
| 3sealed | 135 | Hiew, Chee Choong (1418) | Lost 0-2 | -201518 |
| 4sealed | 190 | Yamada, Shingo (1500) | Lost 0-2 | -191499 |
| 5sealed | 389 | Okajima, Masahiro (1503) | Lost 0-2 | -181481 |
| 6sealed | 342 | Furugen, Takeji (1444) | Lost 0-2 | -181463 |
| top | average opponent: 1498record: 2-4 | new rating: 1463 | ||