Mahoney, William
Current rating: 1383
Record: 5-13
| Grand Prix New Jersey 2017 (lim) (XLN limited) | starting rating: 1384 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 287 | Shane, Kyle (1780) | Won 2-1 | +251409 |
| 2sealed | 208 | Malick, Adam (1520) | Lost 0-2 | -161393 |
| 3sealed | 381 | Jenista, Michael (1502) | Lost 1-2 | -161377 |
| 4sealed | 410 | Faustino, Anneliese (1411) | Lost 1-2 | -171360 |
| 5sealed | 441 | Echandy Garcia, Gamaliel (1490) | Won 2-0 | +201380 |
| 6sealed | 390 | Melamed, Maximilian (1456) | Won 2-1 | +201400 |
| 7sealed | 279 | Hannon, Elijah (1506) | Lost 0-2 | -171383 |
| top | average opponent: 1523record: 3-4 | new rating: 1383 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 306 | Nugent, Mark (1517) | Lost 1-2 | -171397 |
| 2sealed | 571 | Brooks, Nick (1544) | Won 2-0 | +211418 |
| 3sealed | 535 | Dills, Adam (1487) | Lost 1-2 | -171401 |
| 4sealed | 725 | Maney, Tom (1458) | Lost 0-2 | -171384 |
| top | average opponent: 1501record: 1-3 | new rating: 1384 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 13 | Kurtz, Joshua (1480) | Won 2-1 | +181464 |
| 2standard | 317 | Thompson, Sam (1518) | Lost 0-2 | -171447 |
| 3standard | 455 | Briones, Enrique D (1502) | Lost 1-2 | -171430 |
| 4standard | 533 | Gunter, Matthew (1499) | Lost 0-2 | -161414 |
| top | average opponent: 1500record: 1-3 | new rating: 1414 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 39 | Swan, Martin (1479) | Lost 1-2 | -181482 |
| 2sealed | 299 | Schutte, Greg (1482) | Lost 0-2 | -181464 |
| 3sealed | 472 | Winters, Scott (1465) | Lost 1-2 | -181446 |
| top | average opponent: 1475record: 0-3 | new rating: 1446 | ||