Courson, William
Current rating: 1788 (#2530)
Record: 33-19 (GP) / 6-6 (professional)
| Mythic Championship II (modern) | starting rating: 1766 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 135 | Liu, Yuchen (1930) | Lost 1-2 | -151751 |
| 2draft | 249 | Van Vaals, Michael (2010) | Lost 1-2 | -131738 |
| 3draft | 237 | Gauthier, Guillaume (1839) | Won 2-0 | +201758 |
| 4modern | 195 | Marcotti, Davide (1844) | Won 2-1 | +191777 |
| 5modern | 146 | Z, Dominic (1944) | Lost 1-2 | -151762 |
| 6modern | 166 | Jara Godoy, Nehuen (1579) | Won 2-0 | +151777 |
| 7modern | 100 | Dominguez, Martin Sebastian (1662) | Won 2-0 | +161793 |
| 8modern | 88 | Vieren, Pascal (2260) | Lost 0-2 | -101783 |
| 9draft | 88 | Stark, Ben S (1879) | Won 2-1 | +201803 |
| 10draft | 127 | Sam, Jimmy (1681) | Won 2-0 | +161819 |
| 11draft | 129 | Stihle, Julien (1943) | Lost 0-2 | -161803 |
| 12modern | 94 | Kuisma, Matti (1991) | Lost 0-2 | -151788 |
| top | average opponent: 1880record: 6-6 | new rating: 1788 | ||
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1681 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 172 | Peterson, Paul (1586) | Won 2-0 | +161697 |
| 4modern | 38 | Findlay, Bill (1528) | Won 2-0 | +151712 |
| 5modern | 2 | Oberkreser, Adam (1619) | Won 2-1 | +161728 |
| 6modern | 21 | Falcone, Victor (1600) | Won 2-0 | +161744 |
| 7modern | 10 | Mekaroun, Anousith (1628) | Won 2-0 | +161760 |
| 8modern | 2 | Grodzinski, Ryan (1823) | Won 2-0 | +191779 |
| 9modern | 3 | DeSutter, Ryan (1605) | Lost 0-2 | -211758 |
| 10modern | 9 | Soorani, Shaheen (2087) | Lost 1-2 | -131745 |
| 11modern | 17 | Paykar, Ashkan (1730) | Won 2-1 | +181763 |
| 12modern | 9 | Dosen, Mihajlo (1653) | Won 2-0 | +161779 |
| 13modern | 11 | Johnson, Case (1780) | Lost 1-2 | -181761 |
| 14modern | 13 | Friedman, Ben (2032) | Lost 1-2 | -131748 |
| 15modern | 19 | Shiffman, Max (1769) | Won 2-1 | +181766 |
| top | average opponent: 1726record: 9-4 | new rating: 1766 | ||
| Grand Prix Richmond 2018 (std) (M19 standard) | starting rating: 1733 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 84 | Martuscelli, James (1518) | Won 2-1 | +141747 |
| 3standard | 26 | Barragan, Alfredo (1571) | Lost 0-2 | -211726 |
| 4standard | 261 | Pedro, Michelle (1551) | Lost 1-2 | -211705 |
| 5standard | 214 | Beshere, Bob (1349) | Lost 1-2 | -241681 |
| top | average opponent: 1497record: 1-3 | new rating: 1681 | ||
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 132 | Blankenship, Freddie (1372) | Won 2-1 | +141639 |
| 3standard | 1 | Acasio, Andres (1602) | Won 2-0 | +171656 |
| 4standard | 5 | Wysocki, Eric (1525) | Lost 0-2 | -201636 |
| 5standard | 137 | Roohi, Arya (1699) | Won 2-1 | +191655 |
| 6standard | 138 | Connor, Andrew (1692) | Won 2-1 | +191674 |
| 7standard | 26 | Smith, Paige (1672) | Won 2-1 | +181692 |
| 8standard | 47 | Gregory, Jay (1602) | Won 2-1 | +161708 |
| 9standard | 20 | Fox, Adam M (1764) | Lost 0-2 | -171691 |
| 10standard | 24 | Duke, Reid (2182) | Won 2-1 | +261717 |
| 11standard | 28 | Kiihne, Zachary (1920) | Won 2-0 | +221739 |
| 12standard | 18 | Caporale, Trey (1542) | Lost 1-2 | -221717 |
| 13standard | 26 | Juste, Pedro (1620) | Lost 0-2 | -191698 |
| 14standard | 52 | Christy, David (1731) | Won 2-1 | +181716 |
| 15standard | 31 | Schaffer, Rick (1647) | Won 2-0 | +171733 |
| top | average opponent: 1683record: 10-4 | new rating: 1733 | ||
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 8 | Swenson, Luke (1649) | Won 2-1 | +211514 |
| 3standard | 9 | McGouirk, Michael (1451) | Won 2-0 | +161530 |
| 4standard | 42 | Newby, John (1641) | Won 2-0 | +201550 |
| 5standard | 2 | Bargo, Craig (1622) | Lost 0-2 | -161534 |
| 6standard | 177 | Lea, Joshua (1542) | Won 2-0 | +181552 |
| 7standard | 56 | Molesch, Max (1865) | Won 2-1 | +231575 |
| 8standard | 50 | Baker, Thomas (1488) | Lost 1-2 | -191556 |
| 9standard | 107 | Rubin, Steve (1930) | Won 2-0 | +241580 |
| 10standard | 35 | Carter, Jonathan (1564) | Won 2-0 | +181598 |
| 11standard | 38 | Rodriguez, Alex (1803) | Lost 1-2 | -141584 |
| 12standard | 69 | Sorrells, Aaron (1685) | Lost 0-2 | -161568 |
| 13standard | 122 | Jones, Jeff (1643) | Won 2-1 | +191587 |
| 14standard | 67 | Spurlock, Scott (1555) | Won 2-1 | +171604 |
| 15standard | 38 | Kiefer, Jack (1775) | Won 2-0 | +211625 |
| top | average opponent: 1658record: 10-4 | new rating: 1625 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 170 | Stiles, Collin (1527) | Lost 1-2 | -171483 |
| 4standard | 427 | Perez Jr., Raymond (1726) | Lost 1-2 | -141469 |
| 5standard | 483 | Sacks, Julian (1557) | Lost 1-2 | -171452 |
| 6standard | 588 | Lipsius, Nick (1485) | Won 2-0 | +191471 |
| 7standard | 472 | Kibbe, Josh (1454) | Won 2-0 | +181489 |
| 8standard | 363 | Stein, Harrison (1571) | Won 2-1 | +191508 |
| 9standard | 251 | Singer, Sean (1645) | Lost 0-2 | -151493 |
| top | average opponent: 1566record: 3-4 | new rating: 1493 | ||