Rackowski, Jonathan
Current rating: 1620
Record: 37-30
| Grand Prix Charlotte 2015 (modern) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 1345 | Conrad, Josh (1518) | Won 2-1 | +161641 |
| 3modern | 1293 | Crutchfield, Erik (1578) | Won 2-0 | +171658 |
| 4modern | 1263 | Hunter, Wilson (1831) | Lost 1-2 | -151643 |
| 5modern | 1139 | Meier, Gregory (1661) | Lost 0-2 | -171626 |
| 6modern | 1260 | Crook, Matthew (1432) | Won 2-1 | +141640 |
| 7modern | 1071 | Drews, Samuel (1538) | Lost 1-2 | -201620 |
| top | average opponent: 1593record: 3-3 | new rating: 1620 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1620 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 135 | Albright, Alex (1361) | Lost 1-2 | -231597 |
| 4sealed | 296 | Bertine, Dalton (1505) | Lost 0-2 | -191578 |
| 5sealed | 275 | Lemos Costa, Lucas (1500) | Won 2-0 | +161594 |
| 6sealed | 277 | Tays, Alexander (1515) | Won 2-1 | +171611 |
| 7sealed | 146 | Sherman, Anthony (1492) | Won 2-0 | +161627 |
| 8sealed | 133 | Aiken, Simone (1670) | Won 2-0 | +181645 |
| 9sealed | 85 | Neiswenter, Daryl (1522) | Lost 1-2 | -201625 |
| top | average opponent: 1509record: 4-3 | new rating: 1625 | ||
| Grand Prix Washington DC 2014 (JOU limited) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 105 | Kahler, Angela (1517) | Won 2-1 | +171565 |
| 3sealed | 67 | Mickle, Marcia (1440) | Won 2-1 | +161581 |
| 4sealed | 46 | Edelkamp, Fred (1840) | Lost 0-2 | -131568 |
| 5sealed | 207 | Jensen, William (2182) | Lost 1-2 | -81560 |
| 6sealed | 273 | Garrou, Elliott (1467) | Won 2-0 | +161576 |
| 7sealed | 243 | Walker, Adam (1542) | Won 2-0 | +171593 |
| 8sealed | 174 | Gebhart, Brian (1561) | Won 2-0 | +181611 |
| 9sealed | 60 | Williams, James (1695) | Won 2-1 | +191630 |
| 10draft | 30 | Sweeney, Austin (1644) | Lost 1-2 | -171613 |
| 11draft | 68 | Contino, Jimmy (1603) | Won 2-1 | +171630 |
| 12draft | 42 | Li, Yuanji (1763) | Won 2-0 | +211651 |
| 13draft | 41 | Li, Chen (1880) | Lost 1-2 | -141637 |
| 14draft | 24 | Smith, Erik (1693) | Lost 1-2 | -171620 |
| top | average opponent: 1679record: 8-5 | new rating: 1620 | ||
| Grand Prix Atlanta 2014 (JOU limited) | starting rating: 1584 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 270 | Preisler, Lowell (1518) | Lost 1-2 | -191565 |
| 3sealed | 578 | Murphy, Jason (1499) | Won 2-0 | +171582 |
| 4sealed | 584 | Dobbin, Jack (1674) | Lost 0-2 | -171565 |
| 5sealed | 609 | Dickman, Philip (1598) | Lost 1-2 | -171548 |
| top | average opponent: 1572record: 1-3 | new rating: 1548 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1608 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 1267 | Piland, Jesse (1688) | Lost 1-2 | -171591 |
| 3modern | 1304 | Kirklow, Joseph (1500) | Lost 0-2 | -191572 |
| 4modern | 1579 | Koch, Peter (1480) | Won 2-0 | +161588 |
| 5modern | 1457 | Clouse, Brad (1532) | Won 2-0 | +171605 |
| 6modern | 1299 | Hogan, Chelsea (1450) | Lost 1-2 | -211584 |
| top | average opponent: 1530record: 2-3 | new rating: 1584 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 61 | Rice, Stephen (1619) | Won 2-0 | +181648 |
| 3legacy | 198 | McDarby, David (1694) | Lost 1-2 | -171631 |
| 4legacy | 281 | Schaeffer, Joshua (1485) | Won 2-1 | +151646 |
| 5legacy | 647 | Cross, Nathan (1502) | Lost 0-2 | -201626 |
| 6legacy | 457 | Fitzgerald, David A (1633) | Lost 0-2 | -181608 |
| top | average opponent: 1587record: 2-3 | new rating: 1608 | ||
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1609 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 48 | Wilson, Anthony (1467) | Won 2-1 | +151624 |
| 3standard | 24 | Tripp, Joshua (1550) | Won 2-1 | +171641 |
| 4standard | 118 | Heminway, Curtis (1555) | Won 2-0 | +161657 |
| 5standard | 42 | Smith, Joseph (1549) | Lost 0-2 | -201637 |
| 6standard | 132 | Padilla, Hector (1555) | Won 2-0 | +171654 |
| 7standard | 63 | Neuman, Joseph (1495) | Won 2-0 | +151669 |
| 8standard | 48 | DelPercio, Collins (1587) | Lost 1-2 | -201649 |
| 9standard | 122 | Hagadorn, Ashley (1579) | Lost 1-2 | -191630 |
| top | average opponent: 1542record: 5-3 | new rating: 1630 | ||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1649 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 222 | Cordell, Robbie (1884) | Lost 0-2 | -141635 |
| 3sealed | 374 | Telkamp, Matthias Paul (1496) | Won 2-1 | +161651 |
| 4sealed | 248 | Costantini, Mark (1453) | Lost 1-2 | -221629 |
| 5sealed | 343 | Barnes, Tyler (1503) | Lost 0-2 | -201609 |
| top | average opponent: 1584record: 1-3 | new rating: 1609 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 675 | van Driel, Boaz (1560) | Won 2-0 | +191519 |
| 3sealed | 585 | Kreiter, Eric (1538) | Lost 1-2 | -181501 |
| 4sealed | 797 | Memgalto, Henrique (1518) | Won 2-0 | +191520 |
| 5sealed | 699 | Eakle, Jake (1533) | Won 2-1 | +181538 |
| 6sealed | 564 | Musser, Dan (1763) | Won 2-1 | +221560 |
| 7sealed | 521 | Friedman, Ben (1938) | Lost 1-2 | -111549 |
| 8sealed | 623 | Gagnon, Jacob (1588) | Won 2-0 | +181567 |
| 9sealed | 539 | McGarry, Mark (1499) | Won 2-0 | +171584 |
| 10sealed | 100 | Duke, Reid (1861) | Won 2-0 | +231607 |
| 11draft | 13 | Johnson, James 1201 (1602) | Won 2-0 | +181625 |
| 12draft | 110 | Hartzler, Adam B (1669) | Won 2-1 | +191644 |
| 13draft | 35 | Rein, Daniel (1733) | Lost 1-2 | -171627 |
| 14draft | 86 | Berg, Tim (1796) | Lost 1-2 | -151612 |
| 15draft | 4 | Dedych, Luke P (1622) | Won 2-1 | +191631 |
| 16draft | 36 | Mossman, Matt (1652) | Won 2-0 | +181649 |
| top | average opponent: 1658record: 11-4 | new rating: 1649 | ||