Frobel, Derek
Current rating: 1434
Record: 3-7
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 22 | Blumenthal, Sidney (1500) | Lost 0-2 | -181452 |
| 2sealed | 368 | Miller, Paul (1450) | Lost 0-2 | -181434 |
| 3sealed | 346 | Walsh, Sean L (1411) | Won 2-0 | +181452 |
| 4sealed | 307 | McKim, Reginald P (1465) | Lost 1-2 | -181434 |
| average opponent: 1457record: 1-3 | new rating: 1434 | |||
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 31 | Chaplin, Dan (1500) | Won 2-0 | +181518 |
| 2extended | 55 | Pustilnik, Michael (1741) | Lost 1-2 | -141504 |
| 3extended | 165 | Byer, Jon (1500) | Lost 0-2 | -181486 |
| 4extended | 279 | Touart, Camden (1412) | Won 2-0 | +171503 |
| 5extended | 187 | Gilbank, Ryan (1501) | Lost 0-2 | -181485 |
| 6extended | 206 | Chin, Chris (1653) | Lost 1-2 | -151470 |
| average opponent: 1551record: 2-4 | new rating: 1470 | |||