Prochak, Chris
Current rating: 1835 (#1439)
Record: 45-24-5 (GP) / 3-3 (professional)
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1840 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 151 | Miller, Jason A (1673) | Won 2-0 | +151855 |
| 2sealed | 7 | Tecos, George (1518) | Lost 1-2 | -241831 |
| 3sealed | 173 | Lewis, Aaron (1834) | Won 2-1 | +181849 |
| 4sealed | 187 | Wascher, Miles (1570) | Won 2-1 | +131862 |
| 5sealed | 136 | Vaugeois, Christophe (1559) | Lost 1-2 | -231839 |
| 6sealed | 162 | Wagner, Joseph (1902) | Won 2-0 | +191858 |
| 7sealed | 75 | Mosca, Matthew (1548) | Lost 0-2 | -231835 |
| top | average opponent: 1658record: 4-3 | new rating: 1835 | ||
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1736 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 202 | Motzer, Zeke (1500) | Won 2-0 | +141750 |
| 2sealed | 192 | Downing, Ian (1485) | Won 2-1 | +131763 |
| 3sealed | 219 | Bekmesian, Chris (1729) | Won 2-0 | +171780 |
| 4sealed | 88 | Pitler, Matt (1454) | Won 2-0 | +131793 |
| 5sealed | 32 | Hendriks, Thomas (1765) | Won 2-0 | +171810 |
| 6sealed | 27 | Douglass, John T. (1562) | Lost 1-2 | -221788 |
| 7sealed | 95 | Yanguas, Fernando (1677) | Won 2-0 | +161804 |
| 8sealed | 14 | Bernat, Michael (2103) | Lost 1-2 | -131791 |
| 9sealed | 57 | Schmidt, Tyler (1719) | Won 2-1 | +171808 |
| 10draft | 42 | Van Cleave, Trey (1837) | Won 2-1 | +181826 |
| 11draft | 64 | Wagstaff, Evan (1933) | Lost 1-2 | -161810 |
| 12draft | 75 | John, Julian (1892) | Lost 0-2 | -161794 |
| 13draft | 66 | Sciesinski, Marcin (1698) | Won 2-1 | +161810 |
| 14draft | 44 | Smock, Devin (1622) | Won 2-1 | +141824 |
| 15draft | 86 | Pham, Nhi (1698) | Won 2-1 | +161840 |
| top | average opponent: 1712record: 11-4 | new rating: 1840 | ||
| Grand Prix Cleveland 2015 (FRF limited) | starting rating: 1633 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 292 | Goldfarb, David (1747) | Won 2-1 | +201653 |
| 4sealed | 53 | Rill, Eric (1727) | Won 2-0 | +201673 |
| 5sealed | 82 | Broderick, Kyle (1573) | Won 2-0 | +161689 |
| 6sealed | 20 | Koch, Florian (2032) | Lost 1-2 | -121677 |
| 7sealed | 112 | Henry, Brenton (1670) | Won 2-0 | +181695 |
| 8sealed | 75 | Brock, Hutch (1835) | Won 2-0 | +201715 |
| 9sealed | 10 | Kenney, Michael (1602) | Won 2-0 | +161731 |
| 10draft | 47 | Sweet, Nathan (1620) | Won 2-1 | +161747 |
| 11draft | 52 | Morrison, Mark (1874) | Won 2-1 | +211768 |
| 12draft | 4 | Parnes, Stuart (1837) | Lost 1-2 | -171751 |
| 13draft | 95 | Heilicher, Ethan (1756) | Lost 0-2 | -181733 |
| 14draft | 71 | Duke, Reid (1967) | Lost 0-2 | -141719 |
| 15draft | 48 | Plowman, Sean (1647) | Won 2-1 | +171736 |
| top | average opponent: 1761record: 9-4 | new rating: 1736 | ||
| Grand Prix Salt Lake City 2005 (Kamigawa block) | starting rating: 1693 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 27 | Cole, Brad (1537) | Lost 1-2 | -201673 |
| 5block | 45 | Postlethwait, William (1622) | Lost 0-2 | -191654 |
| 6block | 56 | Cook, Richard (1522) | Lost 0-2 | -211633 |
| top | average opponent: 1560record: 0-3 | new rating: 1633 | ||
| Grand Prix Detroit 2005 (BOK limited) | starting rating: 1728 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 64 | yackley, keith (1537) | Won 2-1 | +151743 |
| 4sealed | 2 | Liu, Jeff (1608) | Lost 0-2 | -211722 |
| 5sealed | 98 | Lovasz, Andrew (1519) | Lost 0-2 | -211701 |
| 6sealed | 120 | Bunyan, Joseph (1519) | Won 2-0 | +141715 |
| 7sealed | 94 | Schwartz, Greg (1498) | Lost 0-2 | -221693 |
| top | average opponent: 1536record: 2-3 | new rating: 1693 | ||
| Grand Prix Boston 2005 (extended) | starting rating: 1683 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 64 | Guevin, Peter (1660) | Lost 1-2 | -191664 |
| 5extended | 117 | Stroh, Brian (1600) | Won 2-1 | +171681 |
| 6extended | 29 | Faber, Shaun (1566) | Won 2-0 | +161697 |
| 7extended | 47 | Reilly, Michael (1692) | Won 2-1 | +181715 |
| 8extended | 19 | Correia, Kevin (1561) | Won 2-0 | +151730 |
| 9extended | 8 | Herbert, Rich (1734) | Won 2-0 | +181748 |
| 10extended | 7 | souza, justin (1635) | Draw 1-1 | -21746 |
| 11extended | 4 | Fiorillo, John (1732) | Lost 1-2 | -181728 |
| 12extended | 15 | Tsumura, Kenji (1694) | Lost 0-2 | -191709 |
| 13extended | 21 | Dobbertin, Ty (1646) | Lost 0-2 | -191690 |
| 14extended | 25 | Fabiano, Gerard (1886) | Won 2-0 | +221712 |
| 15extended | 21 | Sadin, Steven (1639) | Won 2-1 | +161728 |
| top | average opponent: 1670record: 7-4-1 | new rating: 1728 | ||
| Pro Tour Nagoya 2005 (COK rochester) | starting rating: 1685 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 83 | Forestier, Nicolas (1518) | Lost 0-2 | -211664 |
| 2rochester | 76 | Stavola, Kate (1754) | Won 2-1 | +201684 |
| 3rochester | 83 | Harkonen, Jarno (1727) | Lost 1-2 | -171667 |
| 4rochester | 38 | Fuji, Yuusuke (1474) | Won 2-1 | +141681 |
| 5rochester | 51 | Stavola, Kate (1748) | Won 2-1 | +191700 |
| 6rochester | 55 | Nam, Kyoung Geun (1711) | Lost 0-2 | -171683 |
| top | average opponent: 1655record: 3-3 | new rating: 1683 | ||
| Grand Prix Austin 2004 (COK limited) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 27 | Martineau, Robert (1539) | Won 2-0 | +181557 |
| 5sealed | 63 | Ferguson, Beau (1631) | Won 2-1 | +191576 |
| 6sealed | 6 | De Rosa, Antonino (1857) | Won 2-0 | +231599 |
| 7sealed | 3 | Solis, David (1596) | Won 2-1 | +181617 |
| 8sealed | 2 | Tamblyn, Mitchell (1824) | Won 2-0 | +221639 |
| 9rochester | 12 | Sklar, Jacob (1650) | Draw 1-1 | 01639 |
| 10rochester | 31 | Stavola, Kate (1779) | Draw 1-1 | +31642 |
| 11rochester | 1 | Burdick, Dan (1786) | Won 2-0 | +201662 |
| 12rochester | 20 | Lunsford, Alan (1649) | Won 2-0 | +181680 |
| 13rochester | 28 | Sonne, Jonathan (1979) | ID | 01680 |
| 14rochester | 8 | Levin, Eugene (1695) | ID | 01680 |
| Qrochester | Thompson, Mike (1688) | Won 2-1 | +181698 | |
| Srochester | Sonne, Jonathan (1992) | Lost 0-2 | -131685 | |
| top | average opponent: 1744record: 8-1-4 | new rating: 1685 | ||
| Grand Prix Anaheim 2003 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 42 | Bruno, Carl (1500) | Draw 1-1 | 01500 |
| 2extended | 63 | Schulte, David (1448) | Won 2-0 | +171517 |
| 3extended | 46 | Holt, Keith (1517) | Won 2-1 | +181535 |
| 4extended | 45 | Sun, Allen (1759) | Won 2-1 | +221557 |
| 5extended | 25 | Mahoney, Joe (1555) | Lost 0-2 | -181539 |
| 6extended | 46 | Cooper, Matt (1561) | Lost 0-2 | -181521 |
| 7extended | 66 | Machan, Thomas (1518) | Draw 1-1 | 01521 |
| 8extended | 61 | Etzel, Alex (1486) | Won 2-1 | +181539 |
| top | average opponent: 1543record: 4-2-2 | new rating: 1539 | ||