Gerstl, Jeff
Current rating: 1501
Record: 9-10
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 41 | Morin, Dalia (1535) | Won 2-0 | +181537 |
| 4sealed | 39 | Hui, Brian (1560) | Lost 0-2 | -181519 |
| 5sealed | 64 | Rocco, Craig (1529) | Lost 1-2 | -181501 |
| top | average opponent: 1541record: 1-2 | new rating: 1501 | ||
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 7 | Koewler, Andrew (1518) | Lost 1-2 | -181492 |
| 4sealed | 131 | Pare, Jean-Michel (1518) | Won 2-0 | +181510 |
| 5sealed | 48 | Sato, Takanobu (1590) | Won 2-1 | +201530 |
| 6sealed | 28 | Kowal, Brian (1514) | Lost 0-2 | -191511 |
| 7sealed | 63 | Ciarroni, Steven (1542) | Won 2-0 | +191530 |
| 8sealed | 55 | Jonsson, Anton (1909) | Lost 0-2 | -111519 |
| top | average opponent: 1599record: 3-3 | new rating: 1519 | ||
| Grand Prix Montreal 2001 (ODY limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 50 | Krouner, Ken (1650) | Lost 0-2 | -141453 |
| 3sealed | 79 | Vilpoux, Jeanphilippe (1500) | Won 2-1 | +191472 |
| 4sealed | 81 | Norment, Jason (1555) | Won 2-0 | +191491 |
| 5sealed | 33 | Eagle, Mountain (1496) | Won 2-0 | +181509 |
| 6sealed | 33 | Hoaen, Rich (1459) | Won 2-1 | +171526 |
| 7sealed | 12 | Roberge, Mathieu (1597) | Lost 1-2 | -161510 |
| top | average opponent: 1543record: 4-2 | new rating: 1510 | ||
| Grand Prix Detroit 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 69 | Vanooteghem, David (1500) | Lost 0-2 | -181482 |
| 3sealed | 122 | Robar, Jason (1465) | Won 2-1 | +181500 |
| 4sealed | 100 | Mills, Jesse (1580) | Lost 0-2 | -171483 |
| 5sealed | 160 | Croft, Michael (1610) | Lost 1-2 | -161467 |
| top | average opponent: 1539record: 1-3 | new rating: 1467 | ||