Prosak, Doug
Current rating: 1643
Record: 23-18-1 (GP) / 6-8 (professional)
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 252 | Matez, Zach (1500) | Won 2-0 | +181511 |
| 2sealed | 107 | Klumpp, Benjamin (1518) | Lost 1-2 | -181493 |
| 3sealed | 377 | Sabo, Sean (1483) | Lost 0-2 | -181475 |
| 4sealed | 681 | Gardner, Garrett (1480) | Won 2-0 | +181493 |
| 5sealed | 596 | Cooney, Nate (1501) | Won 2-0 | +181511 |
| 6sealed | 261 | Sanok, Mathew (1518) | Won 2-0 | +181529 |
| 7sealed | 317 | Wilkins, Crossman (1707) | Won 2-0 | +211550 |
| 8sealed | 241 | Hiles, Christopher (1603) | Won 0-0 | +191569 |
| 9sealed | 84 | Kramer, Hugh (1482) | Won 2-0 | +171586 |
| 10draft | 98 | Kvartek, Chris (1695) | Lost 0-2 | -161570 |
| 11draft | 41 | Passaro, Nick (1572) | Won 2-1 | +181588 |
| 12draft | 85 | Goodman, Stephen (1560) | Won 2-0 | +171605 |
| 13draft | 26 | Tolpingrud, Nils (1699) | Won 2-0 | +201625 |
| 14draft | 14 | Beaman, PJ (1631) | Won 2-0 | +181643 |
| 15draft | 32 | Chase, John (1707) | ID | 01643 |
| top | average opponent: 1577record: 11-3-1 | new rating: 1643 | ||
| Pro Tour Born of the Gods (modern) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 160 | Van Eeghen, Elmer (1601) | Lost 1-2 | -171481 |
| 2draft | 144 | Chan, Jeffrey Guo Ming (1781) | Won 2-1 | +241505 |
| 3draft | 82 | Parker, Brock (1949) | Lost 1-2 | -111494 |
| 4modern | 175 | Cox, Patrick (1798) | Lost 0-2 | -121482 |
| 5modern | 181 | Pfersich, Yoann (1618) | Won 2-1 | +201502 |
| 6modern | 122 | Cecilia, Manuel (1580) | Lost 1-2 | -161486 |
| 7modern | 135 | Chan, Jeffrey Guo Ming (1761) | Lost 0-2 | -131473 |
| 8modern | 164 | Gallais, Alexis (1589) | Won 2-1 | +201493 |
| top | average opponent: 1710record: 3-5 | new rating: 1493 | ||
| Grand Prix Indianapolis 2008 (SHM limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 261 | Morgan, Aj (1500) | Won 2-0 | +181516 |
| 2sealed | 147 | Kunkel, Jeremy (1546) | Lost 1-2 | -181498 |
| 3sealed | 334 | Hanel, Danny (1500) | Won 2-0 | +181516 |
| 4sealed | 208 | Bernard, Jeff (1483) | Lost 1-2 | -181498 |
| top | average opponent: 1507record: 2-2 | new rating: 1498 | ||
| Grand Prix Columbus 2007 (legacy) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 114 | Swearingen, Jon (1518) | Draw 1-1 | +11497 |
| 3legacy | 149 | Anderson, Michael (1297) | Won 2-0 | +141511 |
| 4legacy | 108 | Graves, Thomas (1517) | Won 2-0 | +181529 |
| 5legacy | 53 | Burks, Brandon (1589) | Lost 1-2 | -171512 |
| 6legacy | 119 | Farrer, Tom (1537) | Won 2-0 | +191531 |
| 7legacy | 72 | Prosak, Adam (1665) | Lost 0-2 | -161515 |
| 8legacy | 134 | Benson, John (1540) | Lost 1-2 | -171498 |
| top | average opponent: 1523record: 3-3-1 | new rating: 1498 | ||
| Grand Prix St. Louis 2006 (CSP limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 21 | Fennell, Christopher (1739) | Lost 0-2 | -141464 |
| 4sealed | 85 | Barnes, Michael (1544) | Lost 0-2 | -161448 |
| 5sealed | 128 | Ellis, Brian (1500) | Won 2-0 | +191467 |
| 6sealed | 106 | Craig, Abe (1518) | Won 2-0 | +191486 |
| 7sealed | 78 | Maxson, Joshua (1573) | Won 2-1 | +191505 |
| 8sealed | 40 | Nakamura, Shuhei (2041) | Lost 0-2 | -91496 |
| top | average opponent: 1652record: 3-3 | new rating: 1496 | ||
| Grand Prix Toronto 2006 (DIS limited) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 46 | McCarthy, Stephen (1452) | Lost 0-2 | -191495 |
| 4sealed | 147 | Tang, Jacky (1518) | Lost 0-2 | -171478 |
| top | average opponent: 1485record: 0-2 | new rating: 1478 | ||
| Pro Tour Prague 2006 (DIS draft) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 114 | Olivera, Adrian (1663) | Won 2-1 | +211509 |
| 2draft | 81 | Doise, Jan (1866) | Lost 0-2 | -111498 |
| 3draft | 126 | Cheung, Justin (1577) | Won 2-1 | +191517 |
| 4draft | 68 | Maij, Rosario (1817) | Lost 1-2 | -131504 |
| 5draft | 22 | Rubin, Benjamin (1963) | Won 2-0 | +261530 |
| 6draft | 93 | Tsapko, Vasily (1652) | Lost 1-2 | -161514 |
| top | average opponent: 1756record: 3-3 | new rating: 1514 | ||
| Grand Prix Richmond 2006 (GPT limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 86 | Chang, Morgan (1497) | Won 2-1 | +181499 |
| 2sealed | 111 | O'Mahoney-Schwartz, Steven (1777) | Lost 1-2 | -131486 |
| 3sealed | 186 | Wahlgren, James (1500) | Won 2-0 | +181504 |
| 4sealed | 157 | Mayes, John (1615) | Lost 0-2 | -161488 |
| top | average opponent: 1597record: 2-2 | new rating: 1488 | ||
| Grand Prix Columbus 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 56 | Madsen, William (1499) | Won 2-0 | +181518 |
| 2sealed | 91 | Jones, Joseph (1500) | Lost 1-2 | -181500 |
| 3sealed | 181 | Zidek, Steve (1500) | Won 2-1 | +181518 |
| 4sealed | 139 | Howell, Damon (1467) | Lost 0-2 | -191499 |
| 5sealed | 259 | Morrow, Joshua (1500) | Lost 0-2 | -181481 |
| top | average opponent: 1493record: 2-3 | new rating: 1481 | ||