Kumagai, Manato
Current rating: 1519
Record: 4-3
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 160 | Fukami, Shuichiro (1500) | Lost 1-2 | -181482 |
| 2sealed | 323 | Nagamine, Taito (1368) | Won 2-1 | +161498 |
| 3sealed | 355 | Hoshi, Tatsurou (1439) | Lost 1-2 | -191479 |
| 4sealed | 444 | Okamoto, Jin (1791) | Won 2-0 | +231502 |
| 5sealed | 310 | Saitou, Hokuto (1434) | Won 2-0 | +171519 |
| 6sealed | 275 | Shimoguchi, Motofumi (1516) | Won 2-1 | +181537 |
| 7sealed | 150 | Hirata, Keiitirou (1538) | Lost 0-2 | -181519 |
| average opponent: 1512record: 4-3 | new rating: 1519 | |||