Rollenhagen, Peter
Current rating: 1641
| Grand Prix Detroit 2005 (BOK limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 146 | Henderson, Eric (1500) | Won 2-1 | +171555 |
| 2sealed | 59 | Heller, Jeff (1485) | Won 2-0 | +171572 |
| 3sealed | 3 | Shi, Di (1572) | Won 2-1 | +181590 |
| 4sealed | 54 | Vienneau, Matthew (1719) | Won 2-1 | +201610 |
| 5sealed | 30 | Allison, Paul (1532) | Lost 1-2 | -191591 |
| 6sealed | 62 | Braymore, Nathon (1538) | Won 2-0 | +171608 |
| 7sealed | 20 | Feinstein, David (1570) | Won 2-0 | +171625 |
| 8sealed | 24 | John, Alexander (1589) | ID | 01625 |
| 9draft | 17 | Blaha, James (1592) | Draw 1-1 | -11624 |
| 10draft | 23 | Pait, Chris (1643) | Won 2-0 | +191643 |
| 11draft | 13 | John, Alexander (1628) | Lost 0-2 | -191624 |
| 12draft | 18 | Blaha, James (1594) | Lost 1-2 | -181606 |
| 13draft | 16 | Feinstein, David (1577) | Won 2-0 | +171623 |
| 14draft | 28 | Darkeff, Gregory (1599) | Won 2-0 | +181641 |
| top | average opponent: 1582record: 9-3-2 | new rating: 1641 | ||
| Grand Prix Boston 2005 (extended) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 58 | Curran, Sean (1518) | Won 2-0 | +171557 |
| 3extended | 38 | Collier, Schehone (1536) | Lost 1-2 | -181539 |
| 4extended | 102 | Strkney, Brian (1502) | Won 2-0 | +171556 |
| 5extended | 80 | Day, Michael (1525) | Lost 0-2 | -181538 |
| top | average opponent: 1520record: 2-2 | new rating: 1538 | ||
| Grand Prix Cleveland 2002 (Odyssey block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 75 | Plance, Raymond (1500) | Won 2-0 | +181518 |
| 2block | 69 | Wilczewski, Robert (1517) | Lost 1-2 | -181500 |
| 3block | 97 | Hiebert, Rebecca (1683) | Won 2-1 | +211521 |
| 4block | 149 | Pereira, Christiano (1577) | Won 2-1 | +191540 |
| 5block | 73 | Worley, Lee (1539) | Won 2-1 | +181558 |
| 6block | 64 | Vanderbeek, Aaron (1524) | Lost 0-2 | -181540 |
| top | average opponent: 1557record: 4-2 | new rating: 1540 | ||