Harrington, Gregory
Current rating: 1523
| Grand Prix Providence 2015 (DTK standard) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 66 | Chu, William (1466) | Won 2-1 | +181489 |
| 2standard | 232 | Emery, Darrin (1475) | Won 2-1 | +171506 |
| 3standard | 204 | Metcalf, Scott (1570) | Won 2-1 | +201526 |
| 4standard | 111 | Kanner, Zachary (1521) | Won 2-1 | +181544 |
| 5standard | 9 | Leverone, Ryan (1758) | Won 2-1 | +211565 |
| 6standard | 29 | Maynard, Pascal (2013) | Lost 1-2 | -101555 |
| 7standard | 41 | Snook, Adam (1808) | Lost 0-2 | -131542 |
| 8standard | 80 | Ball, Randall (1526) | Lost 0-2 | -191523 |
| top | average opponent: 1642record: 5-3 | new rating: 1523 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 247 | Frederick, Christina (1500) | Won 2-0 | +181499 |
| 2sealed | 177 | Neidigh, Jesse (1436) | Won 2-0 | +171516 |
| 3sealed | 85 | Janasiewicz, Jason (1668) | Lost 0-2 | -151501 |
| 4sealed | 83 | Walker, Alexander (1521) | Lost 1-2 | -181483 |
| 5sealed | 217 | Gibbs, Nathan (1499) | Won 2-0 | +191502 |
| 6sealed | 101 | Skallerup, Josiah (1639) | Lost 1-2 | -161486 |
| 7sealed | 145 | Lim, Teng Chi (1635) | Lost 0-2 | -151471 |
| top | average opponent: 1557record: 3-4 | new rating: 1471 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 871 | Brashear, Mike (1444) | Lost 0-2 | -191481 |
| top | record: 0-1 | new rating: 1481 | ||