Sumiya, Youichi
Current rating: 1397
Record: 1-7
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 134 | Kurashima, Kazuki (1541) | Lost 0-2 | -171431 |
| 2legacy | 564 | Endo, Takumi (1481) | Lost 0-2 | -171414 |
| 3legacy | 590 | Iida, Naoki (1436) | Lost 1-2 | -171397 |
| average opponent: 1486record: 0-3 | new rating: 1397 | |||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 650 | Hyodo, Kosuke (1620) | Lost 1-2 | -161484 |
| 2legacy | 565 | Kamimura, Yohei (1428) | Lost 0-2 | -191465 |
| 3legacy | 1148 | Sakamoto, Satoshi (1461) | Lost 0-2 | -181447 |
| 4legacy | 1170 | Kinoshita, Yoshito (1453) | Lost 0-2 | -181429 |
| 5legacy | 1138 | Tanaka, Tarou (1447) | Won 2-0 | +191448 |
| average opponent: 1482record: 1-4 | new rating: 1448 | |||