Sakamoto, Ryuutarou
Current rating: 1453
Record: 5-8
| Grand Prix Kobe 2017 (modern) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 53 | Yamawaki, Takumi (1485) | Lost 1-2 | -181447 |
| 2modern | 854 | Nakai, Kousei (1464) | Lost 1-2 | -171430 |
| 3modern | 1292 | Wakayama, Tetsuya (1464) | Won 2-1 | +181448 |
| 4modern | 997 | Hirai, Kento (1559) | Won 2-0 | +201468 |
| 5modern | 1042 | Sugita, Daichi (1641) | Lost 0-2 | -151453 |
| 6modern | 1063 | Saito, Shigeru (1438) | Won 2-1 | +181471 |
| 7modern | 683 | Tanaka, Mizuki (1454) | Lost 0-2 | -181453 |
| average opponent: 1501record: 3-4 | new rating: 1453 | |||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 480 | Sato, Hisao (1560) | Lost 1-2 | -171483 |
| 2standard | 844 | Mihashi, Takanobu (1523) | Lost 0-2 | -171466 |
| 3standard | 1169 | Jacobsen Heiska, Ivan (1464) | Won 2-0 | +181484 |
| 4standard | 937 | Takasou, Kazuki (1487) | Won 2-1 | +181502 |
| 5standard | 885 | Abe, Yuji3038 (1464) | Lost 1-2 | -191483 |
| 6standard | 862 | Chen, Chen (1470) | Lost 0-2 | -181465 |
| average opponent: 1495record: 2-4 | new rating: 1465 | |||