Rochat, Peter S
Current rating: 1596
| Grand Prix Providence 2011 (legacy) | starting rating: 1589 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 6 | Race, Joshua A (1500) | Lost 0-2 | -201569 |
| 2legacy | 222 | Hoyt, Jonathan (1428) | Won 2-1 | +161585 |
| 3legacy | 100 | Levesque, Adam (1500) | Won 2-0 | +161601 |
| 4legacy | 104 | Mirghahari, Ali (1519) | Won 2-0 | +171618 |
| 5legacy | 66 | Mattiuzzo, Richard (1583) | Won 2-0 | +171635 |
| 6legacy | 62 | Roucoulet, Jeffrey (1556) | Lost 1-2 | -191616 |
| 7legacy | 114 | Verdoni, Luca (1537) | Lost 0-2 | -201596 |
| top | average opponent: 1518record: 4-3 | new rating: 1596 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 185 | Murphy, Ben (1500) | Won 2-0 | +151647 |
| 3sealed | 35 | Domlack, Jeremy A (1518) | Lost 1-2 | -201627 |
| 4sealed | 94 | Keaveny, Joseph (1526) | Lost 0-2 | -201607 |
| 5sealed | 245 | Berry, Lynn (1597) | Lost 1-2 | -181589 |
| top | average opponent: 1535record: 1-3 | new rating: 1589 | ||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 366 | Kahn, Jared (1474) | Won 2-0 | +181518 |
| 2legacy | 132 | Hundertmark, Evan (1501) | Won 2-0 | +171535 |
| 3legacy | 45 | Mohr, Bryan (1601) | Won 2-0 | +191554 |
| 4legacy | 57 | Lewis, Scott (1539) | Won 2-0 | +181572 |
| 5legacy | 55 | Elias, Matthew H (1605) | Won 2-0 | +191591 |
| 6legacy | 5 | Martin, Andrew (1592) | Lost 0-2 | -181573 |
| 7legacy | 71 | Staffa, Eric (1559) | Won 2-1 | +181591 |
| 8legacy | 19 | Buzzie, Daniel (1557) | Won 2-1 | +171608 |
| 9legacy | 9 | Belfatto, Michael (1681) | Lost 0-2 | -171591 |
| 10legacy | 25 | Conkle, Mark (1550) | Lost 0-2 | -191572 |
| 11legacy | 63 | Bramlett, Nathan (1558) | Won 2-0 | +181590 |
| 12legacy | 41 | Passow, Tyler (1590) | Won 2-1 | +181608 |
| 13legacy | 36 | Romao, Carlos (1845) | Won 2-0 | +221630 |
| 14legacy | 18 | Rogerson, Ian (1630) | Lost 1-2 | -181612 |
| 15legacy | 33 | Garber, Jacob (1685) | Won 2-0 | +201632 |
| top | average opponent: 1598record: 11-4 | new rating: 1632 | ||