Osako, Masaki
Current rating: 1437
Record: 2-5
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 157 | Mizuno, Akimitsu (1210) | Won 2-1 | +131513 |
| 2legacy | 113 | Kasuga, Nobuhiro (1559) | Lost 1-2 | -171496 |
| 3legacy | 269 | Ishifuro, Yuichi (1448) | Lost 0-2 | -191477 |
| 4legacy | 363 | Itou, Ryouta (1367) | Won 2-0 | +161493 |
| 5legacy | 326 | Okutomi, Hiromitsu (1406) | Lost 0-2 | -201473 |
| 6legacy | 312 | Ookura, Takahiro (1465) | Lost 1-2 | -181455 |
| 7legacy | 302 | Tanaka, Takayuki (1429) | Lost 0-2 | -181437 |
| average opponent: 1412record: 2-5 | new rating: 1437 | |||