McMahon, Mark
Current rating: 1464
Record: 0-2
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 113 | Shin, Jae (1500) | Lost 1-2 | -181482 |
| 2sealed | 172 | rice, mark (1481) | Lost 1-2 | -181464 |
| average opponent: 1491record: 0-2 | new rating: 1464 | |||