Ishitsuka, Masahito
Current rating: 1563
Record: 8-4
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 47 | Fuzioka, Yuu (1500) | Won 2-1 | +161586 |
| 2standard | 636 | Tonozaki, Hiroki (1497) | Lost 0-2 | -191567 |
| 3standard | 1094 | Machida, Takeo (1501) | Lost 0-2 | -201547 |
| 4standard | 1418 | Okamura, Koshi (1517) | Won 2-0 | +181565 |
| 5standard | 879 | Jinnai, Ryosuke (1505) | Won 2-0 | +171582 |
| 6standard | 659 | Kajitani, Akinobu (1520) | Lost 1-2 | -191563 |
| average opponent: 1507record: 3-3 | new rating: 1563 | |||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4modern | 481 | Kosemura, Tomohiro (1481) | Won 2-1 | +181518 |
| 5modern | 329 | Furukawa, Kai (1525) | Lost 0-2 | -181500 |
| 6modern | 449 | Kawasaki, Shingo (1449) | Won 2-1 | +171517 |
| 7modern | 327 | Tanigawa, Futa (1514) | Won 2-0 | +181535 |
| 8modern | 218 | Uzawa, Yuichi (1509) | Won 2-1 | +171552 |
| 9modern | 147 | Onizuka, Makoto (1511) | Won 2-0 | +181570 |
| average opponent: 1498record: 5-1 | new rating: 1570 | |||