Perdigon, William
Current rating: 1446
Record: 1-4
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Price, Doug (1516) | Lost 0-2 | -181482 |
| 2sealed | 213 | Ziparo, Thomas J (1482) | Won 2-0 | +181500 |
| 3sealed | 144 | Mai, David (1500) | Lost 1-2 | -181482 |
| 4sealed | 235 | Schriffin, Philip (1482) | Lost 0-2 | -181464 |
| 5sealed | 198 | Hunt, Brad (1464) | Lost 0-2 | -181446 |
| average opponent: 1489record: 1-4 | new rating: 1446 | |||