Mayall, Courtney
Current rating: 1535
Record: 48-55-2
Grand Prix San Antonio 2012Grand Prix Oklahoma City 2013Grand Prix Albuquerque 2013Grand Prix Dallas-Fort Worth 2013Grand Prix San Antonio 2014Grand Prix Omaha 2015Grand Prix Las Vegas 2015 (1)Grand Prix Dallas-Fort Worth 2015Grand Prix Oklahoma City 2015Grand Prix Albuquerque 2016Grand Prix Oklahoma City 2017Grand Prix Dallas-Fort Worth 2018Grand Prix Dallas-Fort Worth 2019
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 357 | Walker, Matthew [USA] (1424) | Lost 1-2 | -201480 |
| 2modern | 403 | Wickham, Derek (1425) | Won 2-0 | +171497 |
| 3modern | 488 | Adams, Alex (1500) | Won 2-1 | +181515 |
| 4modern | 263 | Vaughn, Brian (1420) | Won 2-0 | +171532 |
| 5modern | 74 | Bradish, Nicholas (1473) | Won 2-1 | +161548 |
| 6modern | 86 | Leeper, Ryan (1766) | Lost 0-2 | -141534 |
| 7modern | 149 | Lerch, Dylan (1689) | Lost 1-2 | -151519 |
| 8modern | 224 | Herren, Jason (1401) | Won 2-1 | +161535 |
| top | average opponent: 1512record: 5-3 | new rating: 1535 | ||
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 26 | Lubinski, Jeffrey (1444) | Lost 1-2 | -191497 |
| 2sealed | 322 | Daley, Devon (1486) | Won 2-0 | +181515 |
| 3sealed | 382 | Russell, Joseph (1471) | Lost 0-2 | -191496 |
| 4sealed | 422 | Shannon, Verdell (1496) | Lost 1-2 | -181478 |
| 5sealed | 433 | Lamb, Dustin (1659) | Lost 1-2 | -151463 |
| 6sealed | 371 | Ashford, Harrison (1451) | Won 2-0 | +181481 |
| 7sealed | 300 | Cotrupe, Matthew (1542) | Won 2-0 | +191500 |
| 8sealed | 226 | McDow, Chris (1480) | Draw 1-1 | 01500 |
| top | average opponent: 1503record: 3-4-1 | new rating: 1500 | ||
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 177 | Hunt, Patrick (1500) | Won 2-1 | +181513 |
| 2modern | 28 | Sanchez, Dyven (1518) | Won 2-0 | +191532 |
| 3modern | 10 | Gouldner, Clint (1536) | Lost 0-2 | -181514 |
| 4modern | 272 | Walkowski, Mark (1502) | Won 2-1 | +171531 |
| 5modern | 215 | Masters, Chase (1761) | Won 2-0 | +231554 |
| 6modern | 167 | Flint, David (1568) | Lost 0-2 | -181536 |
| 7modern | 118 | Maddux, Tyler (1545) | Lost 1-2 | -181518 |
| 8modern | 315 | Senf, Christopher (1472) | Lost 1-2 | -191499 |
| 9modern | 319 | Rodriguez, Stephen (1445) | Won 2-1 | +171516 |
| top | average opponent: 1538record: 5-4 | new rating: 1516 | ||
| Grand Prix Albuquerque 2016 (SOI limited) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 5 | Post, Evan (1455) | Won 2-1 | +171525 |
| 3sealed | 227 | Fonseca, Oscar (1595) | Lost 1-2 | -171508 |
| 4sealed | 324 | Berry, Mike (1645) | Lost 1-2 | -161492 |
| 5sealed | 342 | Black, Jason (1681) | Won 2-0 | +221514 |
| 6sealed | 200 | Savitz, Lukas (1470) | Lost 0-2 | -191495 |
| 7sealed | 339 | Zandi, Jeff (1462) | Won 2-1 | +171512 |
| 8sealed | 203 | Douglass, Mark (1563) | Lost 1-2 | -171495 |
| top | average opponent: 1553record: 3-4 | new rating: 1495 | ||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 1020 | Mosteller, Bennett (1518) | Won 2-1 | +181506 |
| 3modern | 233 | Hudman, Kenny (1536) | Won 0-0 | +191525 |
| 4modern | 45 | Baize, Will (1556) | Won 2-1 | +181543 |
| 5modern | 8 | Lackey, Russell (1573) | Won 2-1 | +191562 |
| 6modern | 14 | Rietzl, Paul (2239) | Lost 1-2 | -71555 |
| 7modern | 85 | Schreck, Nicholas (1576) | Lost 1-2 | -181537 |
| 8modern | 172 | Nelson, Brandon (1770) | Lost 1-2 | -141523 |
| 9modern | 158 | Allard, Jason (1663) | Lost 1-2 | -151508 |
| top | average opponent: 1679record: 4-4 | new rating: 1508 | ||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 24 | Henderson, Casey (1482) | Won 2-0 | +191441 |
| 3sealed | 170 | Blohon, Lukas (2119) | Won 2-1 | +291470 |
| 4sealed | 57 | van Eeden, Jacques (1686) | Won 2-0 | +211491 |
| 5sealed | 81 | Wardlaw, Tanner (1557) | Won 2-1 | +201511 |
| 6sealed | 29 | Fontaine, Chris (1598) | Lost 0-2 | -171494 |
| 7sealed | 31 | Suarez, Andres (1800) | Won 2-0 | +241518 |
| 8sealed | 29 | Allen, John (1643) | Won 2-1 | +201538 |
| 9sealed | 32 | Birrell, Ian (1652) | Lost 0-2 | -161522 |
| 10draft | 93 | Burns, John (1574) | Won 2-1 | +191541 |
| 11draft | 95 | Scheuermann, Alex (1754) | Lost 0-2 | -141527 |
| 12draft | 55 | Wibel, Shane (1534) | Lost 0-2 | -181509 |
| 13draft | 36 | Dagen, Pierre (1863) | Lost 0-2 | -121497 |
| 15draft | 14 | Severson, Eric (2013) | Lost 0-2 | -91488 |
| top | average opponent: 1713record: 7-6 | new rating: 1488 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 208 | Salazar, David (1560) | Lost 0-2 | -161395 |
| 3sealed | 426 | Smith, Nathaniel 2 (1432) | Lost 0-2 | -171378 |
| 4sealed | 424 | Lubarsky-Ford, Daniel (1477) | Won 2-1 | +201398 |
| 5sealed | 295 | Koppenhowfer, Bobby (1497) | Won 2-0 | +201418 |
| 6sealed | 259 | Flynn, Ryan (1493) | Lost 1-2 | -171401 |
| 7sealed | 222 | Bass, Chris (1552) | Won 2-0 | +211422 |
| top | average opponent: 1502record: 3-3 | new rating: 1422 | ||
| Grand Prix Omaha 2015 (modern) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 61 | Gass, Garrett (1518) | Lost 1-2 | -161421 |
| 3modern | 362 | Cockrell, Joseph (1445) | Won 2-1 | +181439 |
| 4modern | 230 | Bush, James (1557) | Lost 0-2 | -151424 |
| 5modern | 394 | Moon, Changuk (1497) | Won 2-1 | +191443 |
| 6modern | 281 | Smith, Alex (1540) | Won 2-1 | +201463 |
| 7modern | 232 | Belty, Alex (1439) | Lost 1-2 | -191444 |
| 8modern | 220 | Hoff, Anthony (1518) | Lost 0-2 | -161428 |
| 9modern | 189 | Cunningham, Daniel (1488) | Lost 1-2 | -171411 |
| top | average opponent: 1500record: 3-5 | new rating: 1411 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 266 | Martinez, Francisco (1481) | Lost 0-2 | -171455 |
| 3standard | 308 | McBride, Scooter (1501) | Lost 0-2 | -181437 |
| top | average opponent: 1491record: 0-2 | new rating: 1437 | ||
| Grand Prix Dallas-Fort Worth 2013 (THS standard) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 170 | Salter, Michael (1518) | Won 2-1 | +181495 |
| 4standard | 135 | Mcclain, Josh (2009) | Won 2-1 | +271522 |
| 5standard | 102 | Yeoh, Ken-Min (1573) | Lost 0-2 | -171505 |
| 6standard | 194 | Schooler, James (1556) | Lost 0-2 | -171488 |
| 7standard | 264 | Fernando, Ronald (1497) | Won 2-0 | +181506 |
| 8standard | 203 | Simon, Michael (1635) | Lost 0-2 | -161490 |
| 9standard | 201 | Spano, Greggory (1494) | Lost 0-2 | -181472 |
| top | average opponent: 1612record: 3-4 | new rating: 1472 | ||
| Grand Prix Albuquerque 2013 (THS standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 288 | Izaguirre, Matt (1518) | Lost 0-2 | -171432 |
| 3standard | 292 | Sampson, Joshua (1501) | Won 2-1 | +191451 |
| 4standard | 276 | Melendrez, Ben (1518) | Won 2-0 | +201471 |
| 5standard | 299 | Houser, Will (1501) | Draw 1-1 | 01471 |
| 6standard | 234 | Moore, John W (1502) | Won 2-1 | +191490 |
| 7standard | 179 | Job, Jonathan (1639) | Lost 1-2 | -151475 |
| 8standard | 243 | Tush, Zakk (1537) | Lost 1-2 | -171458 |
| 9standard | 261 | Deguzman, Christopher (1513) | Won 2-1 | +191477 |
| top | average opponent: 1529record: 4-3-1 | new rating: 1477 | ||
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1389 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 165 | Tomlinson, Matt (1517) | Won 2-0 | +211410 |
| 3sealed | 237 | Woodward, Jonathan (1847) | Won 2-0 | +251435 |
| 4sealed | 180 | Moses, Jason (1401) | Won 2-0 | +171452 |
| 5sealed | 158 | Smith, Greg (1732) | Lost 1-2 | -131439 |
| 6sealed | 170 | Randell, Tye (1548) | Won 2-1 | +201459 |
| 7sealed | 176 | Gibson, William (1579) | Won 2-0 | +211480 |
| 8sealed | 116 | Silva, Jose Francisco (1806) | Lost 0-2 | -131467 |
| 9sealed | 198 | Wijsman, Gerwin (1733) | Won 2-1 | +231490 |
| 10draft | 48 | Riecks, Matthew (1736) | Lost 0-2 | -141476 |
| 11draft | 45 | Cummings, Michael (1553) | Lost 0-2 | -161460 |
| 12draft | 59 | Connell, Zoe (1623) | Won 2-0 | +211481 |
| 14draft | 39 | Shaw, Adam (1699) | Lost 0-2 | -141467 |
| 15draft | 50 | Eaton, Ryan (1485) | Lost 1-2 | -181449 |
| top | average opponent: 1635record: 7-6 | new rating: 1449 | ||
| Grand Prix San Antonio 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 70 | Nappier, James (1500) | Lost 1-2 | -181482 |
| 2standard | 232 | Newcomb, Stephen C (1482) | Lost 0-2 | -181464 |
| 3standard | 318 | Guzman, James (1465) | Lost 0-2 | -181446 |
| 4standard | 373 | Lopez II, Jonathan (1445) | Won 2-0 | +181464 |
| 5standard | 319 | Villela Segura, Gorman (1394) | Lost 0-2 | -191445 |
| 6standard | 296 | Feris, Samuel (1385) | Lost 1-2 | -191426 |
| 7standard | 244 | Herrera, Maximus (1397) | Lost 0-2 | -191407 |
| 8standard | 203 | Duke, John (1411) | Lost 0-2 | -181389 |
| top | average opponent: 1435record: 1-7 | new rating: 1389 | ||