Vaughn, Tom
Current rating: 1545
Record: 13-11-1
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 148 | Wakefield, Tyler (1537) | Won 2-0 | +181559 |
| 4modern | 192 | Cohen, Mike (1533) | Lost 0-2 | -181541 |
| 5modern | 400 | Crandall, Justin (1494) | Won 2-0 | +171558 |
| 6modern | 272 | Napoli, Phillip (1777) | Won 2-0 | +221580 |
| 7modern | 102 | Obrascovs, Felix (1506) | Lost 1-2 | -191561 |
| 8modern | 244 | Blanchet, Eric (1667) | Lost 0-2 | -161545 |
| top | average opponent: 1586record: 3-3 | new rating: 1545 | ||
| Grand Prix Cincinnati 2014 (BNG standard) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 474 | Litz, Ben (1464) | Lost 1-2 | -201506 |
| 2standard | 627 | Roller, Kimberly (1482) | Won 2-1 | +181524 |
| 3standard | 353 | Kuzemczak, Devan (1467) | Won 2-1 | +171541 |
| 4standard | 231 | Garner, Derrick (1644) | Won 2-1 | +201561 |
| 5standard | 325 | Velzen, Andrew (1542) | Draw 1-1 | 01561 |
| 6standard | 215 | Pan, Boris (1503) | Lost 1-2 | -201541 |
| top | average opponent: 1517record: 3-2-1 | new rating: 1541 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 44 | King, Robert (1517) | Won 2-0 | +181525 |
| 2modern | 198 | Yost, Jared (1517) | Won 2-1 | +181543 |
| 3modern | 220 | Macaraeg, Tad (1639) | Won 2-1 | +201563 |
| 4modern | 58 | Fleischmann-Rose, David (1552) | Lost 1-2 | -181545 |
| 5modern | 133 | Seifert, Nick (1552) | Won 2-0 | +181563 |
| 6modern | 168 | McCord, Kristopher (1530) | Lost 0-2 | -191544 |
| 7modern | 266 | Ganadillo, Marenz (1507) | Lost 0-2 | -181526 |
| top | average opponent: 1545record: 4-3 | new rating: 1526 | ||
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 379 | Propcheck, Jeff (1500) | Won 2-0 | +181518 |
| 2sealed | 194 | Cook, Anthony (1484) | Won 2-0 | +171535 |
| 3sealed | 32 | Tundo, Vincent (1646) | Lost 0-2 | -161519 |
| 4sealed | 362 | Kelley, Shane (1630) | Won 2-0 | +201539 |
| 5sealed | 318 | Kronenberger, Chris (1745) | Lost 1-2 | -141525 |
| 6sealed | 273 | Podobnik, Tony (1529) | Lost 1-2 | -181507 |
| top | average opponent: 1589record: 3-3 | new rating: 1507 | ||