Defilippo, David
Current rating: 1394
Record: 1-7
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 539 | Holmes, Evan (1403) | Lost 0-2 | -191445 |
| 2sealed | 602 | Peacock, Robert (1578) | Lost 0-2 | -161429 |
| 3sealed | 747 | O'Neill, Alex (1464) | Lost 1-2 | -171412 |
| 4sealed | 805 | Pannese, Patrick (1446) | Lost 0-2 | -181394 |
| average opponent: 1473record: 0-4 | new rating: 1394 | |||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 518 | King, Jeremy (1528) | Won 2-1 | +191519 |
| 2sealed | 407 | Collins, Jason (1473) | Lost 1-2 | -191500 |
| 3sealed | 648 | Mccarthy, Kevin (1498) | Lost 1-2 | -181482 |
| 4sealed | 688 | Mahini, Shaw (1483) | Lost 1-2 | -181464 |
| average opponent: 1496record: 1-3 | new rating: 1464 | |||