Koizumi, Ryosuke
Current rating: 1463
Record: 1-3
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 157 | Inzuka, Keisuke (1500) | Lost 0-2 | -181463 |
| record: 0-1 | new rating: 1463 | |||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 189 | Nakamura, Masato7966 (1500) | Won 2-1 | +181518 |
| 2sealed | 42 | Ogino, Hiroki (1537) | Lost 0-2 | -181500 |
| 3sealed | 284 | Makigano, Motohiro (1430) | Lost 0-2 | -191481 |
| average opponent: 1489record: 1-2 | new rating: 1481 | |||