Roberts, Rob
Current rating: 1436
Record: 12-17-1
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 486 | Jackson, Adam (1500) | Lost 1-2 | -171455 |
| 2sealed | 1083 | Manley, Justin (1425) | Lost 0-2 | -191436 |
| top | average opponent: 1463record: 0-2 | new rating: 1436 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 201 | Williams, Robert O (1518) | Won 2-0 | +191462 |
| 3sealed | 101 | Grinblat, Jason (1530) | Lost 1-2 | -171445 |
| 4sealed | 125 | Johnsey, David (1504) | Lost 0-2 | -171428 |
| 5sealed | 279 | Daniels, Brandun (1500) | Won 2-0 | +201448 |
| 6sealed | 142 | Ferrando, Matthew (1621) | Won 2-1 | +211469 |
| 7sealed | 128 | Phillips, Eric (1621) | Won 2-1 | +201489 |
| 8sealed | 98 | Luong, Bao (1529) | Lost 0-2 | -171472 |
| top | average opponent: 1546record: 4-3 | new rating: 1472 | ||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 52 | Steht, Lee (1676) | Lost 1-2 | -151457 |
| 4sealed | 136 | Tobey, Aaron (1525) | Lost 0-2 | -161441 |
| 5sealed | 210 | Oliveros, Alex (1482) | Won 2-0 | +181459 |
| 6sealed | 127 | Gundersen, Aaron (1525) | Lost 0-2 | -161443 |
| top | average opponent: 1552record: 1-3 | new rating: 1443 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 16 | Tamblyn, Alex (1511) | Lost 0-0 | -171471 |
| 4extended | 136 | Tatum, Matthew (1484) | Won 2-1 | +181489 |
| 5extended | 136 | tyler, james V (1536) | Lost 0-2 | -171472 |
| top | average opponent: 1510record: 1-2 | new rating: 1472 | ||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 13 | Reit, Larry (1500) | Won 2-0 | +191466 |
| 2block | 99 | Hyden, Paul (1517) | Draw 1-1 | +11467 |
| 3block | 81 | Siu, Brian (1442) | Won 2-0 | +171484 |
| 4block | 66 | Newsome, Jeremiah (1536) | Won 2-0 | +191503 |
| 5block | 33 | Herring, Bret (1475) | Won 2-1 | +181521 |
| 6block | 17 | Fish, Darryll (1669) | Lost 1-2 | -161505 |
| 7block | 44 | Casper, Mattie (1555) | Lost 0-2 | -171488 |
| top | average opponent: 1528record: 4-2-1 | new rating: 1488 | ||
| Grand Prix Tampa Bay 2002 (TOR limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 63 | Vasiladiotis, Joseph (1481) | Lost 0-2 | -181464 |
| 2sealed | 139 | Techton, Joseph (1482) | Lost 1-2 | -171447 |
| top | average opponent: 1481record: 0-2 | new rating: 1447 | ||
| Grand Prix Las Vegas 2001 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 79 | Ganska, Eli (1500) | Won 2-0 | +181518 |
| 2extended | 17 | Shipley, Harry (1484) | Won 2-0 | +171535 |
| 3extended | 12 | Valdez, Tim (1536) | Lost 1-2 | -181517 |
| 4extended | 122 | Fallon, Chris (1576) | Lost 0-2 | -171500 |
| 5extended | 124 | frantz, chad (1500) | Lost 0-2 | -181482 |
| top | average opponent: 1519record: 2-3 | new rating: 1482 | ||