Wittmann, Dennis
Current rating: 1518
| Grand Prix Phoenix 2006 (CSP limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 81 | Thompson, Steven (1464) | Won 2-0 | +181501 |
| 2sealed | 7 | Bergstein, Matti (1518) | Won 2-0 | +181519 |
| 3sealed | 9 | Swarowski, Robert (1741) | Won 2-0 | +221541 |
| 4sealed | 33 | Arant, Gary (1644) | Lost 1-2 | -161525 |
| 5sealed | 38 | Padilla, Travis (1668) | Lost 0-2 | -161509 |
| 6sealed | 101 | Liu, Jeff (1622) | Won 2-1 | +201529 |
| 7sealed | 60 | Damo da Rosa, Paulo Vitor (1907) | Lost 0-2 | -111518 |
| top | average opponent: 1652record: 4-3 | new rating: 1518 | ||
| Grand Prix Las Vegas 2001 (extended) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 110 | Smith, Matt (1505) | Lost 0-2 | -181462 |
| 2extended | 170 | Petersen, Patrick (1482) | Won 2-1 | +191481 |
| 3extended | 119 | Swinney, Jeff (1500) | Won 2-0 | +181499 |
| 4extended | 92 | Best, Willie (1622) | Draw 1-1 | +21501 |
| 5extended | 104 | Urban, Miki (1477) | Lost 0-2 | -181483 |
| top | average opponent: 1517record: 2-2-1 | new rating: 1483 | ||
| Grand Prix Phoenix 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 14 | Peterson, James (1483) | Won 2-0 | +181518 |
| 2extended | 4 | Fallon, Chris (1467) | Won 2-1 | +171535 |
| 3extended | 7 | Ly, Darek (1482) | Lost 0-2 | -191516 |
| 4extended | 67 | Jarusinsky, Jason (1518) | Lost 1-2 | -181498 |
| 5extended | 72 | May Jr, David (1500) | Lost 0-2 | -181480 |
| top | average opponent: 1490record: 2-3 | new rating: 1480 | ||