Hartley, Billy
Current rating: 1469
Record: 5-7
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 140 | Periot, Maigan (1456) | Won 2-1 | +171501 |
| 2legacy | 151 | Kuxmann, Cody (1566) | Lost 1-2 | -171484 |
| 3legacy | 344 | Klements, Michael (1522) | Won 2-0 | +191503 |
| 4legacy | 137 | Hammes, James (1518) | Lost 0-2 | -181485 |
| 5legacy | 245 | Tan, Marcus (1553) | Lost 1-2 | -161469 |
| average opponent: 1523record: 2-3 | new rating: 1469 | |||
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 714 | Limbert, Travis (1573) | Lost 0-2 | -171483 |
| 2modern | 717 | Martino, Thomas (1450) | Won 2-1 | +181501 |
| 3modern | 939 | Ricci, Nate (1499) | Won 2-0 | +181519 |
| 4modern | 462 | Ashley, Steven (1518) | Lost 0-2 | -181501 |
| 5modern | 560 | Penny, Eric (1530) | Lost 1-2 | -181483 |
| 6modern | 894 | Burnham, Jack (1482) | Won 2-0 | +181501 |
| 7modern | 635 | Catardi, Joey (1535) | Lost 1-2 | -171484 |
| average opponent: 1512record: 3-4 | new rating: 1484 | |||