Piercy, Marshall
Current rating: 1409
Record: 0-5
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 225 | Wegner, Fred (1500) | Lost 1-2 | -181482 |
| 2extended | 245 | Williams, Miguel (1482) | Lost 1-2 | -181464 |
| 3extended | 325 | Golden, Brian (1430) | Lost 0-0 | -191445 |
| 4extended | 330 | Sewell, Anthony L (1446) | Lost 0-2 | -181427 |
| 5extended | 295 | Trautman, Brian (1428) | Lost 0-2 | -181409 |
| average opponent: 1457record: 0-5 | new rating: 1409 | |||