Petsche, Shawn
Current rating: 1538
Record: 6-5-1
| Grand Prix Montreal 2011 (M12 limited) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 410 | Delduca, Alex (1500) | Won 2-1 | +171540 |
| 5sealed | 361 | Ewing, Joseph (1595) | Won 2-0 | +191559 |
| 6sealed | 360 | Watanabe, Yuuya (2211) | Lost 0-2 | -71552 |
| 7sealed | 382 | Lindo, David (1571) | Lost 1-2 | -181534 |
| 8sealed | 377 | Taimla, Christopher (1558) | Won 2-0 | +181552 |
| 9sealed | 372 | Ganz, Andreas (1729) | Lost 1-2 | -141538 |
| average opponent: 1694record: 3-3 | new rating: 1538 | |||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Wobbe, Nathan P (1500) | Draw 1-1 | 01500 |
| 2sealed | 356 | Martinez, David R (1500) | Lost 1-2 | -181482 |
| 3sealed | 498 | Forsberg, Donovan (1482) | Won 2-0 | +181500 |
| 4sealed | 402 | Collins, Jay T (1545) | Won 2-1 | +191519 |
| 5sealed | 274 | Carlson, Jason R (1574) | Won 2-0 | +191538 |
| 6sealed | 178 | Verhey, Gavin (1687) | Lost 0-2 | -151523 |
| average opponent: 1548record: 3-2-1 | new rating: 1523 | |||