Whattam, Corey
Current rating: 1462
Record: 6-8
| Grand Prix Toronto 2018 (modern) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 506 | Ouellet, Keven (1466) | Lost 0-2 | -191479 |
| 2modern | 637 | Rubin, Nicholas (1482) | Lost 0-2 | -181461 |
| 3modern | 757 | Jefkins, Michael (1567) | Lost 1-2 | -161445 |
| 4modern | 760 | Hine, James (1367) | Won 2-1 | +171462 |
| 5modern | 676 | Eadie Jr, William (1466) | Won 2-0 | +181480 |
| 6modern | 582 | Shillingford, David (1495) | Lost 0-2 | -181462 |
| 7modern | 541 | Purser, Quinn (1467) | Won 2-0 | +181480 |
| 8modern | 380 | Ostap, Adam (1480) | Lost 1-2 | -181462 |
| average opponent: 1474record: 3-5 | new rating: 1462 | |||
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 442 | Yeung, Howard (1500) | Won 2-0 | +181518 |
| 2standard | 240 | Kabir, Fuad (1518) | Won 2-1 | +181536 |
| 3standard | 32 | Asselin, Eric (1546) | Won 2-1 | +181554 |
| 4standard | 37 | Wilson, Chris (1413) | Lost 0-2 | -201534 |
| 5standard | 290 | Butchart, Terry (1536) | Lost 1-2 | -181516 |
| 6standard | 352 | Evans, Lyra (1513) | Lost 0-2 | -181498 |
| average opponent: 1504record: 3-3 | new rating: 1498 | |||