Dedrick, John
Current rating: 1822 (#1714)
Record: 121-75-2
- 2007
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
| Grand Prix Reno 2020 (THB limited) | starting rating: 1852 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Lee, Christopher (1454) | Won 2-1 | +111863 |
| 2sealed | 97 | Svilich, Erik (1688) | Lost 1-2 | -211842 |
| 3sealed | 240 | Warden, Justin (1698) | Won 2-1 | +161858 |
| 4sealed | 133 | Fridley, Thomas (1525) | Lost 0-2 | -241834 |
| 5sealed | 216 | Lin, Yee-Way (1403) | Won 2-0 | +101844 |
| 6sealed | 115 | Buddensiek, Peter (1586) | Lost 1-2 | -221822 |
| top | average opponent: 1559record: 3-3 | new rating: 1822 | ||
| Grand Prix New Jersey 2020 (THB limited) | starting rating: 1850 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 134 | Gardiner, James (1606) | Won 2-1 | +141864 |
| 2sealed | 82 | Lerner, Clark (1615) | Won 2-1 | +141878 |
| 3sealed | 94 | Sacks, Julian (1609) | Lost 1-2 | -231855 |
| 4sealed | 437 | Sundstrom, Mark (1570) | Lost 0-2 | -231832 |
| 5sealed | 368 | Baraniecki, Michael (1783) | Lost 1-2 | -191813 |
| 6sealed | 432 | Jaques, Jordan (1439) | Won 2-1 | +111824 |
| 7sealed | 338 | Corriveau, Julien (1491) | Won 2-0 | +121836 |
| 8sealed | 246 | Shak, Marcus (1717) | Won 2-0 | +161852 |
| top | average opponent: 1604record: 5-3 | new rating: 1852 | ||
| Grand Prix Phoenix 2019 (ELD limited) | starting rating: 1855 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Halftermeyer, Roger (1500) | Won 2-0 | +111866 |
| 2sealed | 37 | Keep, Joseph (1586) | Won 2-1 | +131879 |
| 3sealed | 107 | de la Cruz, David (1529) | Won 2-0 | +121891 |
| 4sealed | 42 | Chen, Michael (1792) | Won 2-0 | +161907 |
| 5sealed | 17 | Sellers, Josh (1761) | Won 2-1 | +161923 |
| 6sealed | 2 | Erler, Billy (1822) | Won 2-1 | +161939 |
| 7sealed | 2 | Hristis, Michael (1790) | Lost 0-2 | -211918 |
| 8sealed | 14 | Hair, Anthony (1584) | Lost 0-2 | -241894 |
| 9sealed | 30 | Walski, John (1537) | Draw 1-1 | -61888 |
| 10draft | 10 | Walski, John (1543) | Lost 1-2 | -241864 |
| 11draft | 10 | Chow, Harold (1677) | Lost 0-2 | -211843 |
| 13draft | 23 | Pike, Jimmy (1557) | Won 2-1 | +131856 |
| 14draft | 11 | Denney, Timothy (1799) | Lost 1-2 | -191837 |
| 15draft | 22 | Lu, Mandy (1603) | Won 2-1 | +131850 |
| top | average opponent: 1649record: 8-5-1 | new rating: 1850 | ||
| Grand Prix Montreal 2019 (ELD limited) | starting rating: 1866 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 306 | Fontaine, Frederic (1467) | Lost 0-2 | -251841 |
| 2sealed | 358 | Giroux, Shaun (1430) | Won 2-0 | +111852 |
| 3sealed | 238 | Corriveau, Julien (1518) | Lost 0-2 | -241828 |
| 4sealed | 317 | Brewer, Spencer (1483) | Won 2-0 | +121840 |
| 5sealed | 207 | Daube-Valois, Noah (1507) | Lost 1-2 | -241816 |
| 6sealed | 237 | Marcellana, Ian (1467) | Won 2-0 | +121828 |
| 7sealed | 190 | Paradis, Jonathan (1448) | Won 2-1 | +121840 |
| 8sealed | 121 | Sebuhyan, Levon (1671) | Won 2-1 | +151855 |
| top | average opponent: 1499record: 5-3 | new rating: 1855 | ||
| Grand Prix Minneapolis 2019 (modern) | starting rating: 1914 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 235 | Buehler, Alexander (1671) | Lost 1-2 | -221892 |
| 2modern | 328 | Dufault, Matthew (1482) | Lost 1-2 | -251867 |
| 3modern | 459 | Kilen, Brady (1465) | Lost 1-2 | -251842 |
| 4modern | 444 | Feehan, Corey (1708) | Won 2-1 | +151857 |
| 5modern | 374 | Hunn, Clayton (1470) | Won 2-0 | +121869 |
| 6modern | 291 | Blackwell, Matthew (1480) | Won 2-0 | +111880 |
| 7modern | 209 | Trump, Rob (1445) | Won 2-0 | +111891 |
| 8modern | 164 | Malm, Erik (1518) | Lost 0-2 | -251866 |
| top | average opponent: 1530record: 4-4 | new rating: 1866 | ||
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1832 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 23 | Porath, McKenna (1540) | Lost 0-2 | -231809 |
| 3sealed | 266 | Dettmann, Aaron (1650) | Won 2-0 | +151824 |
| 4sealed | 239 | Barclay, Allan (1600) | Won 2-1 | +141838 |
| 5sealed | 134 | Riddle, Chris (1551) | Won 2-0 | +131851 |
| 6sealed | 35 | Short, Gregory (1661) | Won 2-1 | +141865 |
| 7sealed | 47 | Sun, Allen (1677) | Won 2-0 | +151880 |
| 8sealed | 32 | Severa, Matt (1929) | Won 2-0 | +191899 |
| 9sealed | 16 | Vanderploeg, Eric (1652) | Won 2-0 | +141913 |
| 10draft | 79 | Chatham, Charles (1786) | Lost 0-2 | -211892 |
| 11draft | 57 | Draves, Cody (1582) | Won 2-1 | +131905 |
| 12draft | 63 | Boor, Zachary (1703) | Lost 0-2 | -221883 |
| 13draft | 27 | Zeng, Grace (1643) | Won 2-1 | +141897 |
| 14draft | 25 | Helbig, Drew (1866) | Won 2-0 | +171914 |
| 15draft | 25 | Downs, Brandon (1828) | ID | 01914 |
| top | average opponent: 1691record: 10-3-1 | new rating: 1914 | ||
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1847 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 232 | Kotecki, Quinn (1879) | Lost 0-2 | -181829 |
| 3standard | 399 | Schafer, Gregory (1661) | Won 2-0 | +151844 |
| 4standard | 212 | Silberman, Philip (1837) | Lost 0-2 | -181826 |
| 5standard | 453 | Pals, Kristopher (1504) | Won 2-1 | +121838 |
| 6standard | 353 | Schlemmer, Branson (1499) | Won 2-0 | +121850 |
| 7standard | 256 | Stalsberg, Chase (1836) | Lost 1-2 | -181832 |
| top | average opponent: 1703record: 3-3 | new rating: 1832 | ||
| Grand Prix New Jersey 2018 (GRN standard) | starting rating: 1916 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 65 | Blazer, Henry (1517) | Won 2-0 | +111927 |
| 3standard | 62 | Dhaliwal, Shawn (1851) | Won 2-0 | +171944 |
| 4standard | 91 | True, Samuel (1637) | Lost 1-2 | -231921 |
| 5standard | 126 | Holt, Andrew (1497) | Lost 0-2 | -261895 |
| 6standard | 311 | Radaszkiewicz, Michael (1544) | Lost 0-2 | -241871 |
| 7standard | 341 | Johnson, Colin (1496) | Lost 0-2 | -241847 |
| top | average opponent: 1590record: 2-4 | new rating: 1847 | ||
| Grand Prix Montreal 2018 (GRN limited) | starting rating: 1937 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 35 | Spinner, Seth (1793) | Lost 0-2 | -211916 |
| 3sealed | 438 | Desaulniers, Charles (1442) | Won 2-1 | +101926 |
| 4sealed | 142 | McDowell, Jaleel (1429) | Lost 1-2 | -261900 |
| 5sealed | 345 | Cosman, Tyler (1497) | Won 2-1 | +111911 |
| 6sealed | 206 | Wong, Jeffrey (1535) | Won 2-0 | +111922 |
| 7sealed | 213 | Rinauto, Benjamin (1620) | Lost 0-2 | -231899 |
| 8sealed | 163 | Cheung, Raymond (1859) | Won 2-1 | +171916 |
| top | average opponent: 1596record: 4-3 | new rating: 1916 | ||
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1919 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 9 | Underhill, Simon (1573) | Won 2-1 | +121931 |
| 3standard | 235 | Sajjad, Usama (1813) | Won 2-1 | +161947 |
| 4standard | 22 | Paykar, Ashkan (1650) | Won 2-1 | +121959 |
| 5standard | 24 | Connor, Andrew (1705) | Won 2-0 | +141973 |
| 6standard | 3 | Calderon, Andrew (1928) | Lost 0-2 | -191954 |
| 7standard | 40 | Chin, Jim (1598) | Won 2-0 | +121966 |
| 8standard | 38 | Dungee, Dane (1570) | Won 2-0 | +111977 |
| 9standard | 27 | Harris, Tim (1745) | Won 2-0 | +141991 |
| 10standard | 13 | Fox, Adam M (1781) | Lost 0-2 | -221969 |
| 11standard | 17 | Egorov, Arseniy (1768) | Lost 1-2 | -221947 |
| 12standard | 30 | Shiffman, Max (1645) | Won 2-0 | +131960 |
| 13standard | 31 | Kanner, Zack (1876) | Lost 1-2 | -191941 |
| 14standard | 42 | de Jesus Freitas, Marcos Paulo (1945) | Won 2-0 | +181959 |
| 15standard | 29 | Johnson-Saeger, Samuel (1749) | Lost 1-2 | -221937 |
| top | average opponent: 1739record: 9-5 | new rating: 1937 | ||
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1917 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 232 | Jaramillo, Daniel (1500) | Won 2-0 | +111928 |
| 2sealed | 211 | Crowe, Joshua (1644) | Won 2-0 | +131941 |
| 3sealed | 43 | Rubin, Aaron (1750) | Lost 0-2 | -221919 |
| 4sealed | 308 | Styskal, Matthew (1785) | Lost 0-2 | -201899 |
| 5sealed | 312 | Cox, Patrick (1830) | Won 2-0 | +171916 |
| 6sealed | 259 | Fisher, Ayden (1554) | Won 2-0 | +111927 |
| 7sealed | 233 | Gray, George (1540) | Won 2-0 | +121939 |
| 8sealed | 151 | Stevenson, James (1842) | Lost 1-2 | -201919 |
| top | average opponent: 1681record: 5-3 | new rating: 1919 | ||
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1798 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Flores, Philip (1500) | Won 2-0 | +131811 |
| 2sealed | 192 | O'Quinn, Mark (1518) | Won 2-0 | +131824 |
| 3sealed | 69 | Anderson, Matt (1597) | Won 2-1 | +141838 |
| 4sealed | 9 | Nguyen, Tri (1475) | Lost 1-2 | -251813 |
| 5sealed | 119 | Gross, David (1678) | Won 2-0 | +161829 |
| 6sealed | 114 | Grodzinski, Ryan (1771) | Lost 1-2 | -191810 |
| 7sealed | 103 | Hora, Kenneth (1525) | Won 2-0 | +131823 |
| 8sealed | 121 | Heine, Brian (1939) | Won 2-1 | +201843 |
| 9sealed | 54 | Berlin, Max (1608) | Won 0-0 | +141857 |
| 10draft | 71 | Michel, Jeffrey (1623) | Won 2-1 | +141871 |
| 11draft | 31 | Maier, Christopher (1954) | Lost 0-2 | -171854 |
| 12draft | 11 | Wiper, Charles (1881) | Won 2-1 | +191873 |
| 13draft | 27 | Smith, Jimmie (1779) | Won 2-1 | +161889 |
| 14draft | 49 | Yasui, Benjamin (1615) | Won 2-1 | +131902 |
| 15draft | 34 | Davila, David (1739) | Won 2-0 | +151917 |
| top | average opponent: 1680record: 12-3 | new rating: 1917 | ||
| Grand Prix New Jersey 2017 (lim) (XLN limited) | starting rating: 1726 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Fox Jr, Joe (1678) | Won 2-0 | +171743 |
| 2sealed | 244 | Pham, Tung (1518) | Won 2-0 | +141757 |
| 3sealed | 187 | Genuario, Andrew (1536) | Won 2-0 | +141771 |
| 4sealed | 5 | Nichols, Peden (1842) | Won 2-1 | +191790 |
| 5sealed | 60 | Singer, Jared (1750) | Won 2-1 | +181808 |
| 6sealed | 10 | Zivick, Paul (1668) | Lost 1-2 | -211787 |
| 7sealed | 99 | Lax, Ari (2042) | Won 2-1 | +231810 |
| 8sealed | 11 | Mann, Samir (1652) | Won 2-1 | +151825 |
| 9sealed | 6 | Mohammed, Nicholas (1624) | Lost 1-2 | -221803 |
| 10draft | 118 | Yang, Zizhuang (1813) | Won 2-1 | +181821 |
| 11draft | 12 | Nicotra, Steven (1590) | Won 2-0 | +141835 |
| 12draft | 53 | Mackey, Jay (1600) | Lost 1-2 | -221813 |
| 13draft | 46 | Haversat, Jacob (1893) | Won 2-0 | +201833 |
| 14draft | 98 | Carey, Bryan (1837) | Lost 0-2 | -181815 |
| 15draft | 61 | [anonymous] | Lost 1-2 | -171798 |
| top | average opponent: 1730record: 10-5 | new rating: 1798 | ||
| Grand Prix Minneapolis 2017 (HOU standard) | starting rating: 1789 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 51 | Houk, Stephen (1465) | Won 2-1 | +121801 |
| 2standard | 195 | Snyder, Bennett (1851) | Lost 1-2 | -171784 |
| 3standard | 366 | Wright, Christian (1646) | Won 2-0 | +151799 |
| 4standard | 297 | Bradley-Vogt, Jeremy (1595) | Won 2-0 | +151814 |
| 5standard | 220 | McComas-Bussa, David (1537) | Won 2-0 | +131827 |
| 6standard | 123 | Smith, Donald (1905) | Won 2-1 | +191846 |
| 7standard | 82 | De Merie, Frank (1550) | Won 2-1 | +131859 |
| 8standard | 31 | Smith, Robert RC (1954) | Lost 0-2 | -161843 |
| 9standard | 50 | Yee-Fong, Paul (1555) | Lost 0-2 | -241819 |
| 10standard | 548 | Luther, Steve (1576) | Lost 1-2 | -221797 |
| 11standard | 589 | Kanner, Zack (1889) | Lost 0-2 | -161781 |
| 12standard | 592 | Rule, Cory (1478) | Won 2-0 | +121793 |
| 13standard | 564 | Rodriguez, Jescy (1474) | Lost 1-2 | -231770 |
| 14standard | 570 | Wilke, Dustin (1519) | Lost 0-2 | -231747 |
| 15standard | 563 | Jenkins, Jason (1570) | Lost 0-2 | -211726 |
| top | average opponent: 1638record: 7-8 | new rating: 1726 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1653 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 9 | Bower, Richard (1469) | Won 2-0 | +151668 |
| 2standard | 193 | Stillwagon, Todd (1573) | Won 2-0 | +161684 |
| 3standard | 71 | Page, Veronica (1728) | Won 2-1 | +191703 |
| 4standard | 130 | Agrawal, Rishi (1565) | Won 2-0 | +151718 |
| 5standard | 8 | Dean, Paul (1895) | Lost 0-2 | -141704 |
| 6standard | 150 | Hoffmann, Matthew (1681) | Won 2-0 | +171721 |
| 7standard | 91 | Kiihne, Zachary (2004) | Won 2-0 | +231744 |
| 8standard | 71 | Schmidlin, Jared (1584) | Won 2-0 | +151759 |
| 9standard | 20 | Nelson, Brad (2210) | Lost 1-2 | -101749 |
| 10standard | 608 | Kelley, Chad (1547) | Won 2-1 | +141763 |
| 11standard | 568 | Juliano, Christopher (1747) | Won 2-0 | +181781 |
| 12standard | 569 | Sockol, Edward (1715) | Lost 1-2 | -191762 |
| 13standard | 587 | Harrell, Chase (1775) | Won 2-0 | +181780 |
| 14standard | 578 | Manfield, Seth (2155) | Lost 0-2 | -111769 |
| 15standard | 589 | Robinson, Bradley (1869) | Won 2-0 | +201789 |
| top | average opponent: 1768record: 11-4 | new rating: 1789 | ||
| Grand Prix Milwaukee 2016 (KLD limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 437 | Pounds, Buzz (1417) | Won 2-0 | +161553 |
| 2sealed | 261 | Anderson, William (1560) | Lost 0-2 | -181535 |
| 3sealed | 426 | Knox, Jamie (1485) | Won 2-0 | +171552 |
| 4sealed | 333 | Baker, John (1404) | Won 2-1 | +161568 |
| 5sealed | 188 | Brostoff, Jonathan (1718) | Won 2-1 | +201588 |
| 6sealed | 111 | Delleola, Edric (1533) | Won 2-0 | +171605 |
| 7sealed | 84 | [anonymous] | Lost 1-2 | -141591 |
| 8sealed | 143 | Kapalas, Georgios (1902) | Won 2-1 | +231614 |
| 9sealed | 95 | Dunnewold, Sam (1788) | Won 2-0 | +211635 |
| 10draft | 119 | Sippy, Thomas (1647) | Lost 1-2 | -171618 |
| 11draft | 179 | Erickson, Matthew (1761) | Won 2-0 | +201638 |
| 12draft | 56 | Lewandowski, Jeremy (1666) | Won 2-1 | +191657 |
| 13draft | 77 | Hu, Haibing (1992) | Won 2-0 | +241681 |
| 14draft | 10 | Dobbin, Jack (1952) | Lost 0-2 | -141667 |
| 15draft | 117 | Majlaton, Alex (1876) | Lost 1-2 | -141653 |
| top | average opponent: 1700record: 10-5 | new rating: 1653 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 928 | Tam, Wai (974) | Won 2-0 | +81578 |
| 2sealed | 893 | Garcia III, Joe (1560) | Lost 1-2 | -181560 |
| 3sealed | 1162 | Keigans, John (1532) | Won 2-0 | +171577 |
| 4sealed | 882 | Shao, Phillip (1681) | Lost 0-2 | -161561 |
| 5sealed | 1087 | Chen, Lesley (1506) | Lost 1-2 | -191542 |
| 6sealed | 1129 | Nguyen, Dung (1490) | Won 2-0 | +171559 |
| 7sealed | 972 | Lagrone, Byron (1510) | Won 2-0 | +171576 |
| 8sealed | 782 | Sondag, Joshua (1464) | Lost 1-2 | -201556 |
| 9sealed | 865 | Arroyo, Josue (1508) | Lost 0-2 | -191537 |
| top | average opponent: 1469record: 4-5 | new rating: 1537 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1045 | Schultz, John (1500) | Won 2-0 | +181516 |
| 2sealed | 210 | Maurer, Joshua (1518) | Won 2-0 | +181534 |
| 3sealed | 203 | Nielsen, Simon (1833) | Lost 0-2 | -131521 |
| 4sealed | 338 | Tabak, Zach (1523) | Won 2-1 | +181539 |
| 5sealed | 172 | Waletzky, Ezekiel (1639) | Won 2-0 | +201559 |
| 6sealed | 209 | Johnson-Epstein, Jasper (1982) | Lost 0-2 | -111548 |
| 7sealed | 165 | Baker, Bob (1566) | Won 2-0 | +191567 |
| 8sealed | 161 | Myatt, Jason (1751) | Lost 1-2 | -151552 |
| 9sealed | 162 | McKimmy, Keith (1535) | Won 2-1 | +181570 |
| top | average opponent: 1650record: 6-3 | new rating: 1570 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 50 | Hames, Caleb (1426) | Draw 1-1 | -11499 |
| 2extended | 200 | Charleston, Geoffrey (1500) | Won 2-1 | +181517 |
| 3extended | 131 | Wansley, James (1466) | Won 0-0 | +171534 |
| 4extended | 97 | Purn, Michael (1545) | Lost 0-2 | -181516 |
| 5extended | 157 | Jackson, Jeremy (1520) | Won 2-1 | +181534 |
| 6extended | 107 | Laviolette, Michael A (1518) | Lost 1-2 | -181516 |
| 7extended | 135 | Brockmann, Cody (1516) | Lost 0-2 | -181498 |
| top | average opponent: 1499record: 3-3-1 | new rating: 1498 | ||