Katsumata, Kosuke
Current rating: 1479
Record: 2-3
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1006 | Matsuo, Keita (1324) | Lost 0-2 | -211479 |
| 2sealed | 1083 | Katayama, Ryuichi (1481) | Won 2-1 | +181497 |
| 3sealed | 995 | Nakajima, Naoki (1500) | Lost 1-2 | -181479 |
| 4sealed | 1099 | Handa, Takuya (1481) | Won 2-1 | +181497 |
| 5sealed | 997 | Tanabe, Motohiro (1498) | Lost 1-2 | -181479 |
| average opponent: 1457record: 2-3 | new rating: 1479 | |||