Mayer, John
Current rating: 1587
Record: 12-8
| Grand Prix Richmond 2014 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 538 | Barnes, Bert (1469) | Won 2-1 | +181500 |
| 2modern | 102 | Furlong, Kevin (1518) | Won 2-0 | +181518 |
| 3modern | 174 | Clift, Brent (1467) | Won 2-0 | +171535 |
| 4modern | 28 | Herron, Josh (1555) | Won 2-0 | +191554 |
| 5modern | 40 | Thomas, Jeff (1592) | Won 2-0 | +191573 |
| 6modern | 11 | Goldstein, Danny (1763) | Lost 0-2 | -151558 |
| 7modern | 103 | Bologna, Will (1583) | Won 2-1 | +181576 |
| 8modern | 28 | Macedo, Ryan (1587) | Lost 0-2 | -171559 |
| 9modern | 110 | Fasano, Joe (1597) | Won 2-1 | +181577 |
| 10modern | 87 | Arndt, Jens (1647) | Won 2-1 | +201597 |
| 11modern | 112 | Mancuso, Adam (1816) | Lost 0-2 | -151582 |
| 12modern | 97 | Ashworth, Jon (1553) | Won 2-0 | +181600 |
| 13modern | 106 | Conrow, Mikael (1744) | Lost 0-2 | -151585 |
| 14modern | 139 | Pyka, Jeffrey (1708) | Lost 1-2 | -161569 |
| 15modern | 137 | Cash, Brett (1584) | Won 2-1 | +181587 |
| average opponent: 1612record: 10-5 | new rating: 1587 | |||
| Grand Prix Atlanta 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 1 | Cavenaugh, Justin (1553) | Lost 1-2 | -171483 |
| 3sealed | 179 | Dreiling, Jake (1500) | Won 2-1 | +181501 |
| 4sealed | 135 | Lim, Teng Chi (1501) | Lost 0-2 | -181483 |
| 5sealed | 197 | Foster, Tucker (1412) | Won 2-0 | +171500 |
| 6sealed | 172 | Ratanacharoensiri, Wyt (1518) | Lost 1-2 | -181482 |
| average opponent: 1497record: 2-3 | new rating: 1482 | |||