Vaughan, Joseph
Current rating: 1445
Record: 1-4
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 29 | Miller, Stefan (1437) | Lost 0-2 | -191481 |
| 2modern | 387 | Stalnaker, Hurley (1516) | Lost 0-1 | -181463 |
| 3modern | 657 | Abernathy, Robert (1463) | Lost 1-2 | -181445 |
| 4modern | 634 | Reyes, Kenneth (1445) | Won 2-1 | +181463 |
| 5modern | 628 | Baca, Megan (1463) | Lost 1-2 | -181445 |
| average opponent: 1465record: 1-4 | new rating: 1445 | |||