Kornacki, Jonathan
Current rating: 1544
Record: 30-30 (GP) / 15-17 (professional)
| Grand Prix Phoenix 2018 (modern) | starting rating: 1604 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 380 | Bryant, Matthew (1354) | Lost 1-2 | -221582 |
| 2modern | 499 | Galuska, Sally (1483) | Lost 0-2 | -201562 |
| 3modern | 612 | Heller, Blake (1580) | Lost 0-2 | -181544 |
| top | average opponent: 1472record: 0-3 | new rating: 1544 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1609 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 224 | Sharf, Jackson (1473) | Lost 0-2 | -211588 |
| 2sealed | 325 | Mozingo, Mathew (1482) | Won 2-0 | +161604 |
| 3sealed | 429 | Shannon, Ryan (1402) | Won 2-0 | +151619 |
| 4sealed | 250 | Takahashi, Zen (1965) | Lost 1-2 | -121607 |
| 5sealed | 278 | Graves, Robert (1843) | Lost 0-2 | -141593 |
| 6sealed | 362 | Plumaj, Simon (1421) | Won 2-1 | +151608 |
| 7sealed | 285 | Schulzetenberg, Todd (1512) | Won 2-0 | +161624 |
| 8sealed | 220 | Harper, Hal (1528) | Lost 0-2 | -201604 |
| top | average opponent: 1578record: 4-4 | new rating: 1604 | ||
| Grand Prix Phoenix 2014 (BNG standard) | starting rating: 1619 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 100 | Nix, Devin (1500) | Won 2-0 | +161635 |
| 2standard | 206 | DeVito, Hunter S (1516) | Lost 1-2 | -201615 |
| 3standard | 500 | Baird, Kenneth (1488) | Won 2-0 | +161631 |
| 4standard | 321 | Gouldthorpe, Cade (1520) | Won 2-0 | +161647 |
| 5standard | 268 | Franklin, Ryan (1542) | Lost 1-2 | -201627 |
| 6standard | 392 | Chatfield, Lawrence (1623) | Lost 1-2 | -181609 |
| top | average opponent: 1531record: 3-3 | new rating: 1609 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 530 | Robbins, Chris (1518) | Won 2-0 | +161646 |
| 3sealed | 819 | Pfefferle, Noah (1551) | Lost 1-2 | -191627 |
| 4sealed | 621 | Diischer, Matt (1552) | Lost 1-2 | -201607 |
| 5sealed | 731 | Lucas, Amanda (1499) | Won 2-0 | +161623 |
| 6sealed | 549 | Bova, Justin (1594) | Won 2-0 | +181641 |
| 7sealed | 410 | Hurej, John (1528) | Won 2-0 | +161657 |
| 8sealed | 306 | Cannon, Christopher (1683) | Lost 1-2 | -181639 |
| 9sealed | 276 | Zimmerlich, Michael (1536) | Lost 0-2 | -201619 |
| top | average opponent: 1558record: 4-4 | new rating: 1619 | ||
| Pro Tour Dragon's Maze (RTR block) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 2 | Martin, Sergio (1466) | Lost 0-2 | -201553 |
| 2draft | 32 | Alimoglu, Emir (1611) | Won 2-1 | +191572 |
| 3draft | 93 | Mowshowitz, Zvi (2081) | Won 2-0 | +271599 |
| 4block | 67 | Bazzana, Aaron (1529) | Won 2-0 | +161615 |
| 5block | 32 | Bonifacio da Costa, Vasco (1811) | Won 2-1 | +221637 |
| 6block | 19 | Pirouet, Ian (1540) | Lost 1-2 | -201617 |
| 7block | 41 | Mowshowitz, Zvi (2096) | Lost 0-2 | -101607 |
| 8block | 59 | Thompson, Gerry (1947) | Lost 0-2 | -121595 |
| 9draft | 49 | Damo da Rosa, Paulo Vitor (1843) | Won 2-1 | +231618 |
| 10draft | 86 | Ravitz, Joshua (1892) | Lost 0-2 | -141604 |
| 11draft | 75 | Schultze, Max (1633) | Won 2-0 | +191623 |
| 12block | 75 | Stark, Ben S (2125) | Won 2-0 | +261649 |
| 13block | 51 | Glantzman, Joshua (1743) | Won 2-1 | +201669 |
| 14block | 34 | Koestler, Jonas (1995) | Lost 0-2 | -121657 |
| 15block | 57 | Summersberger, Helmut (1869) | Lost 0-2 | -141643 |
| 16block | 68 | Wilson, Jacob (1971) | Lost 1-2 | -131630 |
| top | average opponent: 1822record: 8-8 | new rating: 1630 | ||
| Grand Prix Anaheim 2012 (Innistrad block) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 108 | Hernandez, David A (1549) | Lost 1-2 | -191577 |
| 4block | 245 | Goldman, JC (1518) | Won 2-1 | +171594 |
| 5block | 98 | Tabor, Matthew (1475) | Lost 1-2 | -201574 |
| 6block | 205 | Sanders, Jordin (1543) | Lost 1-2 | -191555 |
| 7block | 240 | Heavyside, Eryk (1500) | Won 2-1 | +171572 |
| 8block | 214 | Pei, Eric (1503) | Won 2-0 | +171589 |
| 9block | 128 | Wilson, Jacob (1684) | Lost 0-2 | -161573 |
| top | average opponent: 1539record: 3-4 | new rating: 1573 | ||
| Grand Prix Salt Lake City 2012 (DKA standard) | starting rating: 1578 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 184 | Curtis, Bryan (1518) | Won 2-0 | +171595 |
| 4standard | 13 | Gross, William (1519) | Lost 1-2 | -191576 |
| 5standard | 152 | Lewis, Mike (1518) | Won 2-0 | +171593 |
| 6standard | 94 | Lassen, Nicholas (1488) | Won 2-0 | +161609 |
| 7standard | 60 | Cabanero, Erik (1567) | Lost 0-2 | -191590 |
| 8standard | 114 | Turtenwald, Owen (1968) | Lost 0-2 | -111579 |
| 9standard | 166 | Tremblay, Cooper (1541) | Won 2-0 | +171596 |
| top | average opponent: 1588record: 4-3 | new rating: 1596 | ||
| Pro Tour Dark Ascension (DKA standard) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 200 | van der Vegt, Jan (1595) | Won 2-0 | +181589 |
| 2standard | 56 | Rikberg, Svante (1669) | Won 2-0 | +201609 |
| 3standard | 45 | Lybaert, Marijn (1794) | Lost 0-2 | -151594 |
| 4standard | 87 | Schmidt, Steffen (1777) | Lost 1-2 | -151579 |
| 5standard | 145 | De Rosa, Antonino (1709) | Lost 1-2 | -151564 |
| 6draft | 86 | Batarseh, Sammy (1784) | Won 2-1 | +221586 |
| 7draft | 26 | Nilsson, Rasmus (1598) | Won 2-0 | +181604 |
| 8draft | 63 | Rogers, Matthew (1689) | Won 2-1 | +191623 |
| 9draft | 74 | Larsson, Joel (1870) | Lost 1-2 | -131610 |
| 10draft | 27 | Turtenwald, Owen (2037) | Lost 1-2 | -111599 |
| 11draft | 79 | Chen, Zhuang (1516) | Won 2-1 | +171616 |
| 12standard | 77 | Nordahl, Andreas (1790) | Lost 1-2 | -151601 |
| 13standard | 74 | Sidher, Ricky (1811) | Lost 0-2 | -151586 |
| 14standard | 78 | Hoaen, Rich (1898) | Won 2-1 | +241610 |
| 15standard | 74 | Royde, Daniel (1754) | Lost 0-2 | -151595 |
| 16standard | 72 | Mueller, Andre (1696) | Lost 0-2 | -171578 |
| top | average opponent: 1749record: 7-9 | new rating: 1578 | ||
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 463 | Woods, Jake (1508) | Won 2-0 | +171549 |
| 3sealed | 416 | Gary, Justin (1827) | Lost 1-2 | -131536 |
| 4sealed | 488 | Martinez, Luke (1520) | Lost 1-2 | -181518 |
| 5sealed | 584 | Bruce D., (1500) | Won 2-1 | +181536 |
| 6sealed | 495 | Larsen, Erik (1520) | Won 2-1 | +171553 |
| 7sealed | 464 | Herr, Paul (1573) | Won 2-0 | +191572 |
| 8sealed | 472 | Kim, Kyoungsoo (1371) | Won 2-1 | +141586 |
| 9sealed | 455 | Wang, Sean (1734) | Lost 1-2 | -151571 |
| top | average opponent: 1569record: 5-3 | new rating: 1571 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 181 | Morawski, Jonathan (1717) | Won 2-1 | +221503 |
| 3extended | 34 | Stewart, Michael L (1536) | Won 0-0 | +191522 |
| 4extended | 6 | Heine, Brian (1541) | Lost 1-2 | -181504 |
| 5extended | 102 | Evans, Kyle (1539) | Won 2-0 | +191523 |
| 6extended | 89 | Wolansky, Steven (1803) | Won 2-0 | +231546 |
| 7extended | 28 | Hakakian, Joshua (1556) | Lost 1-2 | -181528 |
| 8extended | 57 | Wyant, Aaron (1559) | Won 2-1 | +181546 |
| 9extended | 48 | Hidlay, Doug (1727) | Lost 0-2 | -141532 |
| top | average opponent: 1622record: 5-3 | new rating: 1532 | ||
| Grand Prix Phoenix 2006 (CSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 64 | Wong, Gary (1518) | Won 2-1 | +181518 |
| 3sealed | 19 | Michaels, Lucas (1558) | Lost 0-2 | -171501 |
| 4sealed | 92 | Voigt, Daniel (1503) | Won 2-1 | +181519 |
| 5sealed | 66 | Tabak, Matt (1483) | Lost 0-2 | -191500 |
| 6sealed | 99 | Bartolomei, Iain (1412) | Lost 0-2 | -191481 |
| top | average opponent: 1495record: 2-3 | new rating: 1481 | ||