Hewitt, Donald R
Current rating: 1383
Record: 4-11-1
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 501 | Patterson, Sinclair (1500) | Lost 1-2 | -161394 |
| 2sealed | 468 | Henderson, Seth (1482) | Lost 0-2 | -171377 |
| 3sealed | 676 | Thompson, Mitchell (1463) | Won 2-1 | +201397 |
| 4sealed | 541 | Morgan, Byron (1417) | Won 2-0 | +181415 |
| 5sealed | 424 | Weymouth, Mark (1478) | Lost 0-2 | -171398 |
| 6sealed | 468 | Li, Christopher (1482) | Lost 0-2 | -161382 |
| 7sealed | 408 | Pagano, Matthew (1466) | Draw 1-1 | +11383 |
| average opponent: 1470record: 2-4-1 | new rating: 1383 | |||
| Grand Prix Toronto 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 116 | Dixon, Jason (1500) | Lost 0-2 | -181482 |
| 2modern | 408 | Tynski, Matthew J (1482) | Lost 0-2 | -181464 |
| 3modern | 419 | Hu, Ray (1463) | Lost 1-2 | -181446 |
| 4modern | 468 | Dube, Alex (1446) | Lost 0-2 | -181428 |
| 5modern | 445 | Romm, Zeev (1428) | Lost 1-2 | -181410 |
| 6modern | 395 | McDowell, Roy (1408) | Won 2-1 | +181428 |
| 7modern | 334 | Vansickle, Michael (1428) | Won 2-0 | +181446 |
| 8modern | 260 | Cavallin, Arthur (1446) | Lost 0-2 | -181428 |
| 9modern | 231 | Jeakins, Jeff (1427) | Lost 0-2 | -181410 |
| average opponent: 1448record: 2-7 | new rating: 1410 | |||