McCallum, Matthew
Current rating: 1542
Record: 11-10
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 201 | Phan, Lam (1749) | Lost 1-2 | -141530 |
| 2legacy | 245 | Dick, Dallas (1462) | Won 2-1 | +171547 |
| 3legacy | 297 | Groner, Joshua (1365) | Won 2-0 | +151562 |
| 4legacy | 185 | Shillingburg, TJ (1545) | Won 2-0 | +171579 |
| 5legacy | 68 | Hair, Anthony (1502) | Won 2-0 | +171596 |
| 6legacy | 115 | Roth, Marcus (1583) | Lost 1-2 | -181578 |
| 7legacy | 177 | McMahan, Brian (1529) | Lost 0-2 | -191559 |
| 8legacy | 215 | Heskett, Jarrod (1623) | Lost 1-2 | -171542 |
| average opponent: 1545record: 4-4 | new rating: 1542 | |||
| Grand Prix Louisville 2017 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 442 | Varner, Adam (1549) | Won 2-1 | +191519 |
| 4legacy | 403 | Avera, Trent (1690) | Lost 0-2 | -151504 |
| 5legacy | 472 | Brown, Edward (1517) | Won 2-0 | +181522 |
| 6legacy | 338 | Green, Patrick (1546) | Won 2-0 | +191541 |
| 7legacy | 332 | Fine, Bobby (1588) | Won 2-1 | +191560 |
| 8legacy | 307 | Majors, Michael (1962) | Lost 1-2 | -121548 |
| 9legacy | 410 | Hwang, Daniel (1744) | Lost 0-2 | -141534 |
| 10legacy | 1224 | Ray, Wil (1576) | Won 2-0 | +191553 |
| 11legacy | 1102 | Church, Mark (1549) | Won 2-1 | +181571 |
| 12legacy | 1044 | Geist, Tyler (1603) | Lost 0-2 | -181553 |
| 13legacy | 1151 | Accetturo, Vince (1741) | Lost 0-2 | -141539 |
| 14legacy | 1136 | Phillips, Cedric (1803) | Won 2-0 | +221561 |
| 15legacy | 1098 | Shukla, Neeraj (1618) | Lost 1-2 | -171544 |
| average opponent: 1653record: 7-6 | new rating: 1544 | |||