Roark, Joshua
Current rating: 1412
Record: 2-7
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 81 | Martinez, Nicholas (1487) | Lost 1-2 | -171446 |
| 2standard | 496 | Lacey, Curtis (1485) | Lost 1-2 | -181428 |
| 3standard | 651 | Kurtz, Joshua (1442) | Won 2-1 | +191447 |
| 4standard | 456 | Sweat, Joe J (1485) | Lost 0-2 | -181429 |
| 5standard | 531 | Giancola, Ronnie (1465) | Lost 1-2 | -171412 |
| average opponent: 1473record: 1-4 | new rating: 1412 | |||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Lambeth, Jason (1460) | Lost 0-2 | -191481 |
| 2sealed | 410 | Walker, Michael (1469) | Lost 1-2 | -181463 |
| 3sealed | 471 | Sepulveda, Daniel (1464) | Won 2-1 | +181481 |
| 4sealed | 413 | Lambdin, Sean (1485) | Lost 0-2 | -181463 |
| average opponent: 1469record: 1-3 | new rating: 1463 | |||