Duffy, Matt
Current rating: 1548
Record: 13-12
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1588 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 420 | Xia, Chenjie (1564) | Lost 0-2 | -191569 |
| 2modern | 836 | Gunn, Thomas (1397) | Won 2-1 | +151584 |
| 3modern | 800 | Fusco, Arthur (1518) | Lost 1-2 | -191565 |
| 4modern | 1059 | Freas, Gerald (1614) | Lost 0-2 | -171548 |
| top | average opponent: 1523record: 1-3 | new rating: 1548 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1425 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 510 | Molfenter, Pete (1500) | Won 2-0 | +201445 |
| 2sealed | 83 | Weber, Nathan (1438) | Won 2-0 | +181463 |
| 3sealed | 70 | Mell, Daniel (1541) | Lost 0-2 | -171446 |
| 4sealed | 414 | Stepka, Benjamin (1469) | Won 2-0 | +181464 |
| 5sealed | 224 | Chiappa, Renzo (1732) | Won 2-1 | +231487 |
| 6sealed | 156 | Budde, Kai (1887) | Won 2-1 | +251512 |
| 7sealed | 46 | Lewis, Aaron (1860) | Won 2-0 | +241536 |
| 8sealed | 19 | Gindt, Lukas (1524) | Won 2-0 | +181554 |
| 9sealed | 7 | Ihlenfeldt, Samuel (1617) | Won 2-1 | +191573 |
| 10draft | 59 | Raun, Jeffrey (1671) | Won 2-0 | +201593 |
| 11draft | 85 | Yeem, Soohwang (1953) | Lost 0-2 | -121581 |
| 12draft | 6 | Comeau, Luke (1669) | Won 2-0 | +201601 |
| 13draft | 28 | Dezani, Jeremy (1887) | Lost 0-2 | -131588 |
| top | average opponent: 1673record: 10-3 | new rating: 1588 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 132 | Lyon, Fredrik (1445) | Lost 0-2 | -181461 |
| 3sealed | 191 | Gaskill, Patrick (1459) | Lost 1-2 | -181443 |
| 4sealed | 271 | Mitchell, Benjamin (1479) | Lost 1-2 | -181425 |
| top | average opponent: 1461record: 0-3 | new rating: 1425 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 1645 | Franger, James (1447) | Lost 1-2 | -191481 |
| 2legacy | 1796 | Lynch, Brandon (1446) | Lost 0-2 | -191462 |
| 3legacy | 1994 | Gier, Troy (1463) | Won 2-1 | +181480 |
| 4legacy | 1863 | Courcy, Daniel (1422) | Won 2-0 | +171497 |
| 5legacy | 1768 | Hendrix, Christopher (1501) | Lost 0-2 | -181479 |
| top | average opponent: 1456record: 2-3 | new rating: 1479 | ||