Rost, Robert
Current rating: 1391
Record: 12-20
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 297 | Coughlin, Christopher (1498) | Won 2-1 | +201429 |
| 2standard | 167 | Tanner, Charles (1652) | Lost 0-2 | -141415 |
| 3standard | 444 | Davies, Sharief (1501) | Won 2-1 | +191434 |
| 4standard | 410 | Crews, Matt (1473) | Lost 0-2 | -171417 |
| 5standard | 540 | Sullivan, Adrian (1752) | Lost 0-2 | -121405 |
| 6standard | 498 | White, Harold (1627) | Lost 0-2 | -141391 |
| top | average opponent: 1584record: 2-4 | new rating: 1391 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 75 | Cooke, Joseph (1500) | Won 2-0 | +181483 |
| 2standard | 37 | Rogers, Charles (1517) | Won 2-0 | +191502 |
| 3standard | 144 | Achuff, Jay (1556) | Lost 0-2 | -171485 |
| 4standard | 213 | Moran, Nick (1774) | Lost 0-2 | -131472 |
| 5standard | 361 | Hinkle, Charles (1874) | Lost 0-2 | -111461 |
| 6standard | 556 | Hobbs, Adam (1484) | Lost 1-2 | -181443 |
| 7standard | 530 | McDaniel, Andrew (1533) | Lost 1-2 | -161427 |
| 8standard | 473 | Baptiste, James (1430) | Lost 0-2 | -181409 |
| top | average opponent: 1583record: 2-6 | new rating: 1409 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 820 | Rustay, Gunnar (1517) | Lost 1-2 | -191520 |
| 3legacy | 1045 | Johnson, Dylan (1500) | Lost 1-2 | -181502 |
| 4legacy | 1198 | Kirby, Nick (1439) | Lost 0-2 | -191483 |
| 5legacy | 1074 | Messing, David (1465) | Lost 1-2 | -181465 |
| top | average opponent: 1480record: 0-4 | new rating: 1465 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 1145 | Vandiver, Derek (1468) | Lost 0-2 | -181501 |
| 3modern | 1309 | Jenkins, James (1483) | Won 2-0 | +171518 |
| 4modern | 1261 | LaPadula, Anthony (1548) | Won 2-1 | +191537 |
| 5modern | 1097 | McCoy, Jeremy (1537) | Lost 0-1 | -181519 |
| 6modern | 1331 | Iramain, Jorge (1653) | Lost 1-2 | -161503 |
| 7modern | 1330 | Taylor, Alex (1503) | Won 2-0 | +181521 |
| 8modern | 1211 | Clark, Blake (1503) | Won 2-0 | +181539 |
| top | average opponent: 1528record: 4-3 | new rating: 1539 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 254 | Nedzweckas, Adam (1500) | Won 2-1 | +181518 |
| 2legacy | 342 | Burton, Cody (1727) | Won 2-0 | +221540 |
| 3legacy | 617 | Schooley, Patrick (1519) | Lost 1-2 | -191521 |
| 4legacy | 456 | Kaminsky, Alex (1519) | Won 2-1 | +181539 |
| 5legacy | 340 | Jenkins, Joe (1478) | Lost 0-2 | -191520 |
| 6legacy | 476 | Newbury, Michael R (1512) | Won 2-0 | +181538 |
| 7legacy | 313 | Larison, Nicholas (1506) | Lost 0-2 | -191519 |
| top | average opponent: 1537record: 4-3 | new rating: 1519 | ||