Marques, Gregory
Current rating: 1470
Record: 4-6
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Ward, Nathan (1598) | Won 2-1 | +201485 |
| 2sealed | 181 | Olson, Alan (1521) | Lost 1-2 | -171468 |
| 3sealed | 238 | Denney, Jonathan (1502) | Won 2-0 | +181486 |
| 4sealed | 330 | Evans, Jr (1518) | Won 2-0 | +191505 |
| 5sealed | 91 | Contino, Jimmy (1537) | Lost 1-2 | -171488 |
| 6sealed | 245 | Reasor, Ian (1518) | Lost 0-2 | -181470 |
| average opponent: 1532record: 3-3 | new rating: 1470 | |||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 80 | Lee, Gary (1518) | Won 2-1 | +181518 |
| 2sealed | 88 | Mullins, Stephen (1518) | Lost 0-2 | -181500 |
| 3sealed | 125 | Ricciardi, Michael (1519) | Lost 0-2 | -171483 |
| 4sealed | 228 | Chan, Robbie (1483) | Lost 1-2 | -181465 |
| average opponent: 1510record: 1-3 | new rating: 1465 | |||