Gyoker, Jason
Current rating: 1630
Record: 40-31-2
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1673 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 609 | Frankel, Matthew (1600) | Won 2-0 | +171690 |
| 4sealed | 543 | Yurkovich, Peter (1560) | Lost 1-2 | -201670 |
| 5sealed | 683 | Sun, Qiushi (1670) | Lost 0-2 | -181652 |
| 6sealed | 889 | Mullin, Geoff (1676) | Lost 0-2 | -181634 |
| 7sealed | 858 | Sprouse, Joseph (1446) | Won 2-0 | +151649 |
| 8sealed | 797 | Adames, Osvaldo (1593) | Lost 1-2 | -191630 |
| top | average opponent: 1591record: 2-4 | new rating: 1630 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1688 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 883 | Johnson, Erik (1693) | Won 2-1 | +191707 |
| 3sealed | 738 | Quinn, Serena (1690) | Lost 1-2 | -191688 |
| 4sealed | 760 | Demestrio, Joe (1769) | Lost 1-2 | -161672 |
| 5sealed | 1024 | Joiner, Brian (1467) | Won 2-1 | +141686 |
| 6sealed | 939 | Ashford, Steven (1496) | Lost 1-2 | -211665 |
| 7sealed | 888 | Brand, Garrett (1505) | Won 2-0 | +151680 |
| 8sealed | 887 | Tam, Wai (1058) | Won 2-1 | +81688 |
| 9sealed | 843 | Pascal, Brandon (1893) | Lost 1-2 | -151673 |
| top | average opponent: 1571record: 4-4 | new rating: 1673 | ||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1714 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 114 | DiMondo, Vince (1518) | Won 2-0 | +151729 |
| 3modern | 41 | Beeghly, Devin (1616) | Lost 1-2 | -211708 |
| 4modern | 417 | Williams, Grey (1598) | Lost 0-2 | -201688 |
| top | average opponent: 1577record: 1-2 | new rating: 1688 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 209 | Sweeney, Alex (1486) | Lost 0-2 | -201573 |
| 3sealed | 478 | Lizzi, Adam (1538) | Won 2-1 | +171590 |
| 4sealed | 320 | Holt, Christopher (1500) | Won 2-0 | +171607 |
| 5sealed | 369 | Raval, Mahendra (1535) | Lost 0-2 | -191588 |
| 6sealed | 551 | Fuentes, Oscar (1468) | Won 2-0 | +151603 |
| 7sealed | 214 | Lancaster, Charles (1774) | Won 2-0 | +211624 |
| 8sealed | 187 | Basham, Levi (1603) | Won 2-0 | +181642 |
| 9sealed | 124 | Cohen, Justin (1940) | Won 2-1 | +231665 |
| 10draft | 25 | Ross, Tom (2016) | Won 2-0 | +241689 |
| 11draft | 96 | Jensen, William (1712) | Lost 1-2 | -171672 |
| 12draft | 55 | Gray, Russell (1659) | Lost 1-2 | -181654 |
| 13draft | 47 | Nestico, Mark (1679) | Won 2-1 | +181672 |
| 14draft | 65 | Brubaker, Michael (1702) | Won 2-1 | +191691 |
| 15draft | 68 | Pardee, Samuel (1998) | Won 2-1 | +231714 |
| top | average opponent: 1686record: 10-4 | new rating: 1714 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1580 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 136 | Barlow, David (1725) | Lost 1-2 | -151565 |
| 4sealed | 179 | Steele, Tracey (1429) | Won 2-0 | +161581 |
| 5sealed | 138 | Malchman, Noah (1510) | Lost 1-2 | -201561 |
| 6sealed | 186 | Kusz, Andrew (1516) | Won 2-0 | +171578 |
| 7sealed | 69 | Farrow, Joshua (1542) | Won 2-0 | +181596 |
| 8sealed | 65 | Saotome, Yukiyo (1543) | Won 2-0 | +171613 |
| 9sealed | 39 | Cravy, Justin (1517) | Lost 1-2 | -201593 |
| top | average opponent: 1540record: 4-3 | new rating: 1593 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1138 | Berger, Benjamin W (1428) | Lost 0-2 | -211533 |
| 2sealed | 1184 | Devore, John (1482) | Won 2-0 | +171550 |
| 3sealed | 342 | Hotza, Adem (1508) | Won 2-1 | +181568 |
| 4sealed | 133 | Schaffer, Rick (1517) | Won 0-0 | +171585 |
| 5sealed | 153 | Anderson, David (1484) | Won 2-0 | +161601 |
| 6sealed | 87 | Allen, Joseph (1539) | Lost 1-2 | -191582 |
| 7sealed | 194 | Buchanan, Kevin (1542) | Won 2-0 | +171599 |
| 8sealed | 123 | Fountain, Nathan (1559) | Lost 1-2 | -191580 |
| top | average opponent: 1507record: 5-3 | new rating: 1580 | ||
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 232 | Chinlund, Kit (1500) | Lost 0-2 | -191521 |
| 2standard | 442 | Woodbury, Michael (1451) | Draw 1-1 | -11520 |
| 3standard | 441 | Collins, Mark (1482) | Won 2-1 | +171537 |
| 4standard | 390 | Peck, Jordan (1494) | Won 2-0 | +171554 |
| 5standard | 291 | Sundook, Noah (1533) | Lost 1-2 | -181536 |
| 6standard | 369 | Belty, Alex (1522) | Won 2-1 | +181554 |
| top | average opponent: 1497record: 3-2-1 | new rating: 1554 | ||
| Grand Prix Charleston 2012 (RTR standard) | starting rating: 1579 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 127 | Page, Joey (1646) | Lost 0-2 | -171562 |
| 3standard | 212 | McGinn, Daniel (1465) | Won 2-1 | +161578 |
| 4standard | 129 | Dupal, Stephen (1516) | Lost 0-2 | -191559 |
| 5standard | 224 | Walters, Cody (1499) | Lost 1-2 | -191540 |
| top | average opponent: 1531record: 1-3 | new rating: 1540 | ||
| Grand Prix Atlanta 2012 (legacy) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 204 | Burgin, Miles (1444) | Lost 1-2 | -191483 |
| 2legacy | 214 | Justice, Adam (1463) | Won 2-0 | +181501 |
| 3legacy | 277 | Deputy, C.J. (1473) | Won 2-1 | +171518 |
| 4legacy | 227 | Thompson, Jordan (1519) | Won 2-0 | +181536 |
| 5legacy | 125 | Shenhar, Shahar (2071) | Won 2-1 | +271563 |
| 6legacy | 130 | Justice, Matthew (1504) | Lost 0-2 | -191544 |
| 7legacy | 194 | Akeley, Peter (1497) | Draw 1-1 | -11543 |
| 8legacy | 167 | Ardary, Steven (1536) | Won 2-0 | +181561 |
| 9legacy | 114 | Wright, Kyle (1524) | Won 2-1 | +181579 |
| top | average opponent: 1559record: 6-2-1 | new rating: 1579 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 452 | Adkins, James Chris (1483) | Won 2-1 | +181518 |
| 2extended | 492 | Foerst, Kerry (1500) | Won 2-1 | +171535 |
| 3extended | 486 | Webster, Aaron (1536) | Lost 1-2 | -181517 |
| 4extended | 503 | Brewer, Josh (1518) | Won 2-1 | +181535 |
| 5extended | 457 | Kinsella, Dana (1484) | Won 2-1 | +171552 |
| 6extended | 460 | Mead, Forrest (1836) | Lost 1-2 | -131539 |
| 7extended | 523 | Keithley, Gregg (1524) | Lost 1-2 | -181521 |
| 8extended | 505 | Evans, Michael A (1476) | Lost 1-2 | -191502 |
| top | average opponent: 1545record: 4-4 | new rating: 1502 | ||