Copeland, Sean
Current rating: 1427
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 30 | Key, Jayden (1500) | Won 2-0 | +191467 |
| 2sealed | 163 | Peralta, Mandee (1628) | Lost 1-2 | -151452 |
| 3sealed | 340 | Tam, Wai (1006) | Lost 1-2 | -261426 |
| 4sealed | 348 | Mangione, Michael (1445) | Won 2-0 | +181444 |
| 5sealed | 222 | Byers, Kirk (1499) | Lost 1-2 | -171427 |
| top | average opponent: 1415record: 2-3 | new rating: 1427 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 112 | Walker, Stephen C (1500) | Won 2-0 | +191482 |
| 2sealed | 215 | Barsness, Jake (1500) | Won 2-0 | +181500 |
| 3sealed | 126 | Cuevas, Jose R (1504) | Lost 0-2 | -181482 |
| 4sealed | 255 | Valerio, Michael (1519) | Lost 0-2 | -171465 |
| 5sealed | 288 | Carvalho, Pedro (1500) | Lost 0-2 | -171448 |
| top | average opponent: 1505record: 2-3 | new rating: 1448 | ||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 32 | Byers, Joshua W (1463) | Lost 0-2 | -191481 |
| 2sealed | 223 | Adams, Bill (1482) | Lost 1-2 | -181463 |
| top | average opponent: 1472record: 0-2 | new rating: 1463 | ||