Opperman, David T
Current rating: 1466
Record: 3-5
| Grand Prix Chicago 2009 (legacy) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 166 | Brinkman, Jason (1519) | Won 2-0 | +191502 |
| 2legacy | 255 | Conta, Anthony (1500) | Lost 1-2 | -181484 |
| 3legacy | 255 | Schwaderer, Thomas (1499) | Lost 1-2 | -181466 |
| average opponent: 1506record: 1-2 | new rating: 1466 | |||
| Grand Prix Indianapolis 2008 (SHM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 330 | Rosiere, James (1500) | Lost 0-2 | -181482 |
| 2sealed | 408 | Esposito, John (1618) | Won 2-0 | +201502 |
| 3sealed | 312 | Buldt, Finn (1500) | Won 2-0 | +181520 |
| 4sealed | 275 | Caporale, Trey (1468) | Lost 0-2 | -191501 |
| 5sealed | 314 | Guedj, Colin (1500) | Lost 1-2 | -181483 |
| average opponent: 1517record: 2-3 | new rating: 1483 | |||