Donaldson, Sam
Current rating: 1463
Record: 4-7
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 428 | Clemmons, Adam (1545) | Lost 0-2 | -161430 |
| 2modern | 354 | Olson, Kyle (1805) | Won 2-0 | +251455 |
| 3modern | 473 | Linares, Carlos (1393) | Won 2-1 | +171472 |
| 4modern | 351 | Hill, Anthony (1474) | Won 2-1 | +181490 |
| 5modern | 123 | Feehan, Corey (1698) | Lost 0-2 | -151475 |
| 6modern | 242 | Deng, Dezhong (1733) | Lost 0-2 | -131462 |
| 7modern | 322 | Weidenkeller, Conrad (1476) | Lost 1-2 | -181444 |
| 8modern | 252 | Smothers, Adam (1460) | Won 2-0 | +191463 |
| average opponent: 1573record: 4-4 | new rating: 1463 | |||
| Grand Prix Liverpool 2015 (FRF limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 562 | Donovan, Jamie (1501) | Lost 1-2 | -181482 |
| 2sealed | 512 | Cruz, Jason (1486) | Lost 0-2 | -181464 |
| 3sealed | 792 | Entwistle, Lyle (1485) | Lost 1-2 | -181446 |
| average opponent: 1491record: 0-3 | new rating: 1446 | |||