McGuire, Samson
Current rating: 1564
Record: 20-18
| Grand Prix Toronto 2019 (modern) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 34 | Babineau, Jesse (1363) | Won 2-0 | +141573 |
| 2modern | 120 | Beaudin, Scott (1523) | Lost 0-2 | -191554 |
| 3modern | 365 | DiGiovanni, Jesse (1500) | Won 2-0 | +171571 |
| 4modern | 326 | Tucker, William Andrew (1469) | Lost 0-2 | -201551 |
| 5modern | 366 | Voss, Skyler (1450) | Won 2-0 | +161567 |
| 6modern | 342 | Grenier, Pascal (1479) | Won 2-1 | +171584 |
| 7modern | 135 | Bradbury, Alex (1472) | Lost 0-2 | -201564 |
| top | average opponent: 1465record: 4-3 | new rating: 1564 | ||
| Grand Prix Toronto 2018 (modern) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 217 | Stinson, Aaron (1500) | Won 2-0 | +181479 |
| 2modern | 217 | Paulino, Davi (1500) | Won 2-0 | +191498 |
| 3modern | 317 | Cooper, Adam [CAN] (1639) | Won 2-0 | +201518 |
| 4modern | 164 | Henderson, Steven (1722) | Lost 0-2 | -141504 |
| 5modern | 140 | Asselin, Eric (1500) | Won 2-1 | +181522 |
| 6modern | 200 | Shoffner, Sam (1583) | Won 2-0 | +191541 |
| 7modern | 63 | Davis, Peter (1650) | Lost 1-2 | -161525 |
| 8modern | 84 | Dixon, Kevin (1663) | Won 2-1 | +211546 |
| 9modern | 99 | Rood, David (1919) | Won 2-0 | +241570 |
| 10modern | 53 | Stein, Abraham (1821) | Lost 0-2 | -131557 |
| 11modern | 78 | Floro, Joshua (1526) | Won 2-1 | +171574 |
| 12modern | 51 | Wong, Matthew (1713) | Lost 0-2 | -151559 |
| top | average opponent: 1645record: 8-4 | new rating: 1559 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 725 | Reed, Kosta (1500) | Won 2-0 | +181508 |
| 2modern | 550 | Hersch, Max (1562) | Won 2-1 | +191527 |
| 3modern | 422 | Lopez, Chris (1761) | Lost 0-2 | -141513 |
| 4modern | 504 | Ralston, Caleb (1467) | Lost 1-2 | -181495 |
| 5modern | 792 | Meier, Dave (1615) | Lost 0-2 | -161479 |
| 6modern | 831 | Pruitt, Bryant (1480) | Lost 0-2 | -181461 |
| top | average opponent: 1564record: 2-4 | new rating: 1461 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 21 | Coletta, Nicholas (1500) | Won 2-0 | +181506 |
| 2legacy | 160 | Mohr, Mike (1465) | Won 2-0 | +171523 |
| 3legacy | 2 | Serignese, Paul (1744) | Lost 1-2 | -141509 |
| 4legacy | 261 | Crawford, Ross (1521) | Won 2-0 | +181527 |
| 5legacy | 235 | Calderon, Christopher (1503) | Lost 1-2 | -181509 |
| 6legacy | 263 | Gouthro, Michael (1468) | Lost 0-2 | -191490 |
| top | average opponent: 1534record: 3-3 | new rating: 1490 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 184 | Bodnar, Wayne W (1500) | Won 2-0 | +181518 |
| 2sealed | 148 | Cuenca, Nicolas (1671) | Won 2-1 | +211539 |
| 3sealed | 3 | Hinkle, Charles (1673) | Lost 1-2 | -161523 |
| 4sealed | 179 | Berg, Tim (1615) | Lost 1-2 | -161507 |
| 5sealed | 147 | Roberts, Tim (1496) | Won 2-0 | +181525 |
| 6sealed | 124 | Boivin, Miguel (1483) | Lost 0-2 | -191506 |
| 7sealed | 135 | Macdonald, Daniel J (1487) | Lost 0-2 | -181488 |
| top | average opponent: 1561record: 3-4 | new rating: 1488 | ||