Keilholz, Jon
Current rating: 1453
Record: 3-6
| Grand Prix Chicago 2012 (modern) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 205 | Byers, Tracy A (1500) | Won 2-0 | +191482 |
| 2modern | 162 | Tina, Logan (1484) | Lost 0-2 | -181464 |
| 3modern | 311 | Amacher, Martin H (1500) | Won 2-1 | +191483 |
| 4modern | 308 | MORROW, SCOTT (1527) | Lost 1-2 | -171466 |
| 5modern | 420 | Estrin, Aaron (1767) | Lost 0-2 | -131453 |
| average opponent: 1555record: 2-3 | new rating: 1453 | |||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 21 | Medina, Jonathan D (1500) | Lost 1-2 | -181482 |
| 2legacy | 179 | Chen, William (1464) | Lost 1-2 | -181464 |
| 3legacy | 247 | Sapp, Joshua (1464) | Won 2-0 | +181482 |
| 4legacy | 270 | Johnson, Jon (1468) | Lost 1-2 | -191463 |
| average opponent: 1474record: 1-3 | new rating: 1463 | |||