McConnell, Marcus A
Current rating: 1503
Record: 3-3
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 163 | Ford, James D (1545) | Won 2-0 | +191519 |
| 2extended | 220 | Evaristo, Tommy (1462) | Won 2-1 | +171536 |
| 3extended | 74 | Sim, Andew (1537) | Lost 0-2 | -181518 |
| 4extended | 189 | Herbert, Rich (1665) | Lost 0-2 | -161502 |
| 5extended | 269 | Murphy, John (1556) | Won 2-0 | +191521 |
| 6extended | 172 | Wagner, Andrew C (1484) | Lost 0-2 | -181503 |
| average opponent: 1542record: 3-3 | new rating: 1503 | |||