Roskam, Jason
Current rating: 1600
Record: 18-12-1
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 657 | Nichols, Ryan (1464) | Won 2-1 | +161580 |
| 2modern | 185 | Smith, Russell (1589) | Won 2-0 | +181598 |
| 3modern | 107 | Rowe, Jonathan (1884) | Won 2-1 | +231621 |
| 4modern | 100 | Loring, Russell (1500) | Lost 1-2 | -201601 |
| 5modern | 434 | Robbins, Jordon (1607) | Won 2-0 | +181619 |
| 6modern | 311 | Lambaz, Khair (1570) | Won 2-1 | +171636 |
| 7modern | 172 | McGuffey, Charles (1575) | Lost 1-2 | -191617 |
| 8modern | 175 | Smiley, Thomas (1642) | Lost 1-2 | -171600 |
| top | average opponent: 1604record: 5-3 | new rating: 1600 | ||
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1590 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 199 | Patton, Brandon (1478) | Lost 0-2 | -201570 |
| 2sealed | 467 | Longofono, Peter (1481) | Won 2-1 | +161586 |
| 3sealed | 597 | Bombardiere, Nicholas (1481) | Won 2-0 | +171603 |
| 4sealed | 302 | Bacine, Noah (1560) | Lost 0-2 | -191584 |
| 5sealed | 494 | Hinton, Edgar (1487) | Lost 1-2 | -201564 |
| top | average opponent: 1497record: 2-3 | new rating: 1564 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 706 | Havle, Jason (1516) | Won 2-0 | +171553 |
| 2legacy | 979 | Hanson, Bryan (1542) | Won 2-1 | +181571 |
| 3legacy | 816 | Pepin, Jonathan (1518) | Lost 1-2 | -191552 |
| 4legacy | 914 | Remelt, Shane (1533) | Won 2-0 | +181570 |
| 5legacy | 741 | Formichella, Ethan (1521) | Won 2-1 | +171587 |
| 6legacy | 677 | Meyler, Max (1558) | Won 2-0 | +181605 |
| 7legacy | 588 | Scalzo, Anthony (1745) | Won 2-0 | +201625 |
| 8legacy | 590 | Marklyn, Tyler (1574) | Lost 1-2 | -191606 |
| 9legacy | 633 | Pankiewicz, Christopher (1566) | Won 2-1 | +171623 |
| 10legacy | 147 | Williams, James (1730) | Lost 1-2 | -161607 |
| 11legacy | 171 | Stanton, Mark (1647) | Lost 0-2 | -171590 |
| top | average opponent: 1586record: 7-4 | new rating: 1590 | ||
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 412 | Ford, Brian (1487) | Draw 1-1 | 01500 |
| 2standard | 391 | Santos, Jonathan (1600) | Lost 0-2 | -161484 |
| 3standard | 621 | McNeil, Nick (1482) | Won 2-0 | +181502 |
| 4standard | 545 | Carlson, Erik (1498) | Won 2-0 | +171519 |
| 5standard | 369 | Crowley, Shawn (1488) | Won 2-1 | +181537 |
| 6standard | 241 | Phamco, Anthony (1470) | Won 2-0 | +171554 |
| 7standard | 159 | Ryttenberg, Harry (1561) | Lost 1-2 | -181536 |
| top | average opponent: 1512record: 4-2-1 | new rating: 1536 | ||