Grygiel, Derek
Current rating: 1391
Record: 5-11-1
| Grand Prix Minneapolis 2018 (M19 limited) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 16 | Blocher, David (1500) | Lost 1-2 | -171405 |
| 2sealed | 450 | Roberts, Eric (1471) | Won 2-0 | +201425 |
| 3sealed | 470 | Smrecek, Kade (1469) | Lost 0-2 | -181407 |
| 4sealed | 479 | Bettencourt, Matthew (1482) | Lost 1-2 | -161391 |
| top | average opponent: 1480record: 1-3 | new rating: 1391 | ||
| Grand Prix Minneapolis 2014 (modern) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 469 | Metzger, Steven (1417) | Lost 0-2 | -191456 |
| 2modern | 635 | Reynolds, Arthur (1560) | Lost 1-2 | -161440 |
| 3modern | 877 | Westerlund, Ethan (1429) | Lost 1-2 | -181422 |
| top | average opponent: 1468record: 0-3 | new rating: 1422 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1531 | Simms, Jarrett (1500) | Draw 1-1 | 01495 |
| 2sealed | 1598 | Crimp, Griffin (1463) | Won 2-1 | +171512 |
| 3sealed | 1732 | Soukup, William (1518) | Lost 0-2 | -181494 |
| 4sealed | 1625 | Cowen, Schyler (1449) | Lost 0-2 | -191475 |
| top | average opponent: 1483record: 1-2-1 | new rating: 1475 | ||
| Grand Prix Minneapolis 2012 (AVR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 223 | Gray, Jim (1500) | Won 2-0 | +181518 |
| 2standard | 23 | Bogdanov, Dennis (1500) | Lost 1-2 | -181500 |
| 3standard | 268 | Carpenter, David (1379) | Won 2-0 | +151515 |
| 4standard | 186 | Davey, Bruce (1339) | Lost 1-2 | -211494 |
| 5standard | 278 | Larson, Blake (1503) | Lost 1-2 | -181476 |
| 6standard | 375 | Rajasekar, Neeraj (1485) | Won 2-1 | +191495 |
| top | average opponent: 1451record: 3-3 | new rating: 1495 | ||