McMahan, Patrick
Current rating: 1456
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 439 | Chu, Derrek (1599) | Won 2-1 | +211435 |
| A2sealed | 469 | Schmitz, Benjamin (1504) | Lost 0-2 | -161419 |
| A3sealed | 330 | Martel, Ashton (1472) | Lost 0-2 | -181401 |
| B1sealed | 305 | Allen, Matthew (1551) | Won 2-0 | +211422 |
| B2sealed | 375 | Wong, Marcus (1593) | Draw 1-1 | +31425 |
| B3sealed | 252 | Rickert, Alex (1521) | Won 2-0 | +201445 |
| B4sealed | 134 | Malcolm Preston, Nicholas (1561) | Lost 1-2 | -161429 |
| B5sealed | 242 | Stieger, Richard (1500) | Won 2-0 | +191448 |
| B6sealed | 150 | Mayer, Bernie (1544) | Won 2-0 | +201468 |
| B7sealed | 92 | Sears, Isaac (1788) | Lost 0-2 | -121456 |
| top | average opponent: 1563record: 5-4-1 | new rating: 1456 | ||
| Grand Prix Oakland 2019 (modern) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 138 | Duggan, Matthew [USA] (1642) | Lost 0-2 | -151451 |
| 3modern | 261 | Belmontez, Luis (1288) | Lost 1-2 | -211430 |
| 4modern | 405 | Quach, Anson (1523) | Lost 1-2 | -161414 |
| top | average opponent: 1484record: 0-3 | new rating: 1414 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 608 | Christensen, Kyle (1549) | Lost 0-2 | -171483 |
| 2sealed | 547 | Darley, David (1543) | Won 2-1 | +191502 |
| 3sealed | 687 | Panara, Bruno (1505) | Lost 0-2 | -181484 |
| 4sealed | 733 | Laviola, Nicholas (1482) | Lost 1-2 | -181466 |
| top | average opponent: 1520record: 1-3 | new rating: 1466 | ||