Lefevre, Charles
Current rating: 1546
Record: 8-6
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 537 | Stoltzfus, Nathan J (1500) | Won 2-1 | +171566 |
| 3sealed | 421 | Guerette, Simon (1562) | Lost 0-2 | -181548 |
| 4sealed | 540 | Whitney, Glen (1519) | Won 2-1 | +171565 |
| 5sealed | 524 | Calvi, Jack (1525) | Lost 1-2 | -181547 |
| 6sealed | 517 | Wong, Mung (1501) | Won 2-0 | +171564 |
| 7sealed | 531 | Keeth, Christian (1589) | Lost 0-2 | -181546 |
| average opponent: 1533record: 3-3 | new rating: 1546 | |||
| Grand Prix Atlanta 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 30 | Bishop, James T (1500) | Won 2-0 | +181518 |
| 3sealed | 88 | Novak, Kyle C (1547) | Won 2-0 | +191537 |
| 4sealed | 32 | Carvalho, Marcio (2094) | Lost 1-2 | -91528 |
| 5sealed | 156 | Lim, Teng Chi (1519) | Won 2-0 | +181546 |
| 6sealed | 73 | Franklin, Eric (1696) | Won 2-0 | +201566 |
| 7sealed | 49 | Bielick, Scott (1655) | Lost 1-2 | -161550 |
| 8sealed | 91 | Fleisher, Stuart (1514) | Won 2-0 | +171567 |
| 9sealed | 69 | Woodward, Jonathan (1542) | Lost 0-2 | -181549 |
| average opponent: 1633record: 5-3 | new rating: 1549 | |||