Shirakawa, Ryoichi
Current rating: 1551
Record: 5-3
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 420 | Sugimura, Yoshiyasu (1658) | Won 2-1 | +211521 |
| 2sealed | 129 | Lee, Jaejeong (1603) | Won 2-0 | +191540 |
| 3sealed | 131 | Sugiyama, Takashi (1538) | Won 2-0 | +181558 |
| 4sealed | 77 | Tsuchiya, Hideaki (1966) | Won 2-1 | +251583 |
| 5sealed | 118 | Matsuyama, Ryousuke (1651) | Lost 0-2 | -161567 |
| 6sealed | 227 | Miyashita, Shota (1495) | Won 2-0 | +161583 |
| 7sealed | 119 | Kubota, Muneaki (1708) | Lost 1-2 | -151568 |
| 8sealed | 200 | Karatsu, Yoshifumi (1627) | Lost 1-2 | -171551 |
| average opponent: 1656record: 5-3 | new rating: 1551 | |||