Sumida, Masashi
Current rating: 1445
Record: 3-6
| Grand Prix Kobe 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 615 | Machida, Naoki (1449) | Lost 1-2 | -191481 |
| 2modern | 907 | Hamada, Kouji (1431) | Lost 0-2 | -191462 |
| 3modern | 1264 | Yamamoto, Kosuke (1392) | Won 2-1 | +171479 |
| 4modern | 1027 | Takashima, Ryuichi (1502) | Lost 0-2 | -181461 |
| 5modern | 1126 | Sumihira, Toru (1463) | Lost 0-2 | -181443 |
| 6modern | 1189 | Leung, Victor (1438) | Won 2-0 | +181461 |
| 7modern | 1025 | Uesugi, Fumiya (1497) | Lost 1-2 | -171444 |
| 8modern | 937 | Nakamura, Kousuke (1431) | Lost 0-2 | -181426 |
| 9modern | 827 | Kawamura, Takayuki (1489) | Won 2-0 | +191445 |
| average opponent: 1455record: 3-6 | new rating: 1445 | |||