Mayer, Jonathan
Current rating: 1462
Record: 1-3
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 83 | Nelms, Kemp (1447) | Lost 0-2 | -191481 |
| 2extended | 337 | Francis, Christopher W (1445) | Won 2-0 | +171498 |
| 3extended | 308 | Bartlett, Justin (1501) | Lost 1-2 | -181480 |
| 4extended | 402 | Peters, Brian (1467) | Lost 0-2 | -181462 |
| average opponent: 1465record: 1-3 | new rating: 1462 | |||