Sakamoto, Katsuya
Current rating: 1465
Record: 1-3
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 941 | Yamashita, Syuto (1500) | Lost 1-2 | -181465 |
| record: 0-1 | new rating: 1465 | |||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 97 | Kamizono, Naoki (1541) | Lost 0-2 | -171483 |
| 2modern | 642 | Katamine, Kentarou (1483) | Lost 0-2 | -181465 |
| 3modern | 675 | Morishima, Ryouta (1465) | Won 2-0 | +181483 |
| average opponent: 1496record: 1-2 | new rating: 1483 | |||