Gardner, John
Current rating: 1553
Record: 12-9
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1569 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 175 | Craddock, William (1850) | Lost 1-2 | -131556 |
| 2modern | 407 | Haywood, Terry (1415) | Lost 0-2 | -211535 |
| 3modern | 609 | Frenzel, Daniel (1449) | Won 0-0 | +171552 |
| 4modern | 1072 | Nguyen, Tai (1483) | Won 2-0 | +161568 |
| 5modern | 280 | Currier, Samuel (1500) | Won 2-0 | +171585 |
| 6modern | 328 | Hunt, Matthias (1877) | Lost 1-2 | -131572 |
| 7modern | 278 | Apple, Drew (1499) | Lost 1-2 | -191553 |
| average opponent: 1582record: 3-4 | new rating: 1553 | |||
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 173 | Hatley, Jake (1498) | Won 2-0 | +181518 |
| 2sealed | 200 | Meredith, Devin (1518) | Won 2-0 | +181536 |
| 3sealed | 266 | Koloff, Daniel (1518) | Won 2-0 | +181554 |
| 4sealed | 191 | Aravidis, Milton (1554) | Lost 1-2 | -181536 |
| 5sealed | 201 | Richardson, Scott (1561) | Won 2-0 | +181554 |
| 6sealed | 146 | Reasoner, Eric (1571) | Lost 1-2 | -181536 |
| 7sealed | 285 | Tam, Wai (1029) | Won 2-1 | +101546 |
| 8sealed | 172 | Bujnowski, Peter (1521) | Won 2-1 | +171563 |
| 9sealed | 147 | Smith, RJ (1573) | Won 2-0 | +191582 |
| 10draft | 1 | Bush, Eric (1737) | Lost 1-2 | -161566 |
| 11draft | 15 | Crouch, Nathan J (1696) | Lost 1-2 | -151551 |
| 13draft | 23 | Murley, Victor B (1531) | Lost 1-2 | -191532 |
| 14draft | 24 | Dunbar, Heath (1569) | Won 2-0 | +191551 |
| 15draft | 51 | Wiegert, Dale (1524) | Won 2-1 | +181569 |
| average opponent: 1529record: 9-5 | new rating: 1569 | |||