Sumitomo, Issei
Current rating: 1520
Record: 4-3
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 144 | Ueyama, Shotaro (1437) | Lost 0-2 | -191481 |
| 2legacy | 395 | Ogo, Dai (1473) | Won 2-0 | +181499 |
| 3legacy | 564 | Shigeyama, Ryo (1500) | Won 2-0 | +181517 |
| 4legacy | 254 | Nanjo, Masashi (1851) | Won 2-0 | +241541 |
| 5legacy | 96 | Kuribara, Shuta (1539) | Lost 0-2 | -181523 |
| 6legacy | 307 | Nagayama, Kanato (1512) | Won 2-1 | +171540 |
| 7legacy | 285 | Matsui, Hideyuki (1425) | Lost 0-2 | -201520 |
| average opponent: 1534record: 4-3 | new rating: 1520 | |||