Bumgardner, Justin N
Current rating: 1487
Record: 3-4
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 531 | Koch, Franz (1421) | Won 2-1 | +171501 |
| 2sealed | 440 | Lempicki, Elizabeth (1707) | Won 2-0 | +211522 |
| 3sealed | 342 | Gauthier, Alain (1518) | Lost 0-2 | -181504 |
| 4sealed | 444 | Cruz, Fernando J (1518) | Lost 1-2 | -171487 |
| average opponent: 1541record: 2-2 | new rating: 1487 | |||
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 157 | Mayer, D.j. (1523) | Won 2-0 | +181518 |
| 2sealed | 49 | Fiorino, Danny (1518) | Lost 1-2 | -181500 |
| 3sealed | 84 | Merwin, Jason (1575) | Lost 0-2 | -161484 |
| average opponent: 1539record: 1-2 | new rating: 1484 | |||