Oiwa, Masashi
Current rating: 1465
Record: 1-3
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 118 | Takakura, Shinichirou (1428) | Won 2-0 | +171517 |
| 2legacy | 312 | Qin, Xiaoqi (1623) | Lost 1-2 | -161501 |
| 3legacy | 426 | Wada, Toshinori (1446) | Lost 0-2 | -191482 |
| 4legacy | 561 | Kawakami, Tomonobu (1531) | Lost 0-2 | -171465 |
| average opponent: 1507record: 1-3 | new rating: 1465 | |||