Trahan, Sean
Current rating: 1491
| Grand Prix Providence 2011 (legacy) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 106 | Whilden, Eric (1374) | Won 2-0 | +161466 |
| 2legacy | 85 | Roucoulet, Jeffrey (1520) | Won 2-0 | +191485 |
| 3legacy | 59 | Anderson, Robert (1643) | Won 2-0 | +211506 |
| 4legacy | 32 | Morawski, Jonathan (1687) | Lost 1-2 | -151491 |
| top | average opponent: 1556record: 3-1 | new rating: 1491 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 79 | Harrison, Jonathan (1500) | Won 2-1 | +191465 |
| 2sealed | 162 | Bergstrom, Michael (1518) | Won 2-0 | +191484 |
| 3sealed | 41 | English, Eric (1518) | Lost 0-2 | -171467 |
| 4sealed | 129 | Seitz, Scott (1518) | Lost 1-2 | -171450 |
| top | average opponent: 1514record: 2-2 | new rating: 1450 | ||
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 32 | Zeiger, Geoffrey (1500) | Lost 0-2 | -181482 |
| 2extended | 257 | Campbell, Brett (1445) | Lost 1-2 | -191463 |
| 3extended | 290 | Jensen, Chris (1461) | Won 2-0 | +181481 |
| 4extended | 238 | Paruntu, Yohanes (1482) | Won 2-1 | +181499 |
| 5extended | 225 | Camacho, Alejandro (1501) | Lost 1-2 | -181481 |
| 6extended | 214 | O'Connell, Titan (1499) | Lost 0-2 | -171464 |
| 7extended | 173 | Castle, Richard (1494) | Lost 1-2 | -181446 |
| top | average opponent: 1483record: 2-5 | new rating: 1446 | ||