Sumner, Dean
Current rating: 1464
Record: 1-3-1
| Grand Prix Birmingham 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 422 | Joynes, Alan (1434) | Lost 0-2 | -191481 |
| 2modern | 629 | Baker, Adam (1468) | Won 0-0 | +181499 |
| 3modern | 701 | Walsh, Steven (1501) | Lost 0-2 | -181481 |
| 4modern | 161 | Stockmarr, Anton (1547) | Draw 1-1 | +11482 |
| 5modern | 676 | Koster, Rob (1497) | Lost 1-2 | -181464 |
| average opponent: 1490record: 1-3-1 | new rating: 1464 | |||