Mackey, James
Current rating: 1481
Record: 2-3
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Perez, Bryan (1500) | Won 2-0 | +181518 |
| 2sealed | 94 | Vinson, David (1447) | Lost 0-2 | -191499 |
| 3sealed | 341 | Engel, Cory (1500) | Won 2-0 | +181517 |
| 4sealed | 262 | Duarte, Jonathan (1520) | Lost 0-2 | -181499 |
| 5sealed | 342 | Rickert, Andrew (1494) | Lost 0-2 | -181481 |
| average opponent: 1492record: 2-3 | new rating: 1481 | |||