Cornelius, Derek
Current rating: 1508
Record: 15-16
| Grand Prix Austin 2020 (modern) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 91 | Decker, Liam (1499) | Won 2-0 | +171583 |
| 2modern | 4 | Bryant, Brandon (1627) | Lost 0-2 | -171566 |
| 3modern | 215 | West, Brendon (1373) | Lost 0-2 | -211545 |
| 4modern | 310 | Barr, Richard (1595) | Lost 0-2 | -181527 |
| 5modern | 304 | Brumbaugh, Jesse (1462) | Lost 1-2 | -191508 |
| top | average opponent: 1511record: 1-4 | new rating: 1508 | ||
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 6 | Martinez, Pablo (1497) | Won 2-1 | +171582 |
| 2modern | 56 | Irwin, Sean (1665) | Lost 0-2 | -171565 |
| 3modern | 609 | Reading, Jeffrey (1523) | Won 2-0 | +171582 |
| 4modern | 484 | Bradshaw, Charlie (1518) | Won 2-1 | +171599 |
| 5modern | 364 | Spatz, Eric (1754) | Lost 1-2 | -151584 |
| 6modern | 289 | Smith, Matthew 6702 (1603) | Lost 1-2 | -181566 |
| top | average opponent: 1593record: 3-3 | new rating: 1566 | ||
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 120 | Sta.Ana, Micol (1609) | Won 2-0 | +191568 |
| 4modern | 8 | Linn, Ricky (1706) | Won 2-1 | +201588 |
| 5modern | 43 | Kiefer, Jack (1968) | Won 2-1 | +251613 |
| 6modern | 2 | Griffin, Thomas (1865) | Lost 1-2 | -141599 |
| 7modern | 67 | Candreva, Christopher (1722) | Lost 1-2 | -151584 |
| 8modern | 153 | Bond, Allan (1543) | Lost 1-2 | -191565 |
| top | average opponent: 1735record: 3-3 | new rating: 1565 | ||
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 226 | Bobadilla, Humberto (1444) | Won 2-1 | +171557 |
| 2modern | 353 | Center, Michael (1529) | Won 2-1 | +171574 |
| 3modern | 1 | Lossett, Joe (1892) | Lost 1-2 | -121562 |
| 4modern | 289 | Li, Scott (1608) | Won 2-0 | +181580 |
| 5modern | 110 | Liao, Chris (1566) | Lost 1-2 | -181562 |
| 6modern | 408 | Reis, Bernardo (1817) | Lost 0-2 | -131549 |
| top | average opponent: 1643record: 3-3 | new rating: 1549 | ||
| Grand Prix Portland 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 636 | Hadley, Brock (1507) | Won 2-1 | +181518 |
| 2modern | 329 | South, Tyler (1564) | Lost 1-2 | -171501 |
| 3modern | 622 | Solis, Steven (1837) | Won 2-1 | +241525 |
| 4modern | 350 | Ng, Nick (1499) | Lost 1-2 | -191506 |
| 5modern | 419 | Ferrante, Drew (1425) | Won 2-1 | +171523 |
| 6modern | 430 | McDonald, Kimberly (1472) | Lost 0-2 | -191504 |
| 7modern | 447 | Magnuson, Brendhan (1500) | Won 2-0 | +181522 |
| 8modern | 304 | Nielson, Nathan (1543) | Won 2-0 | +181540 |
| top | average opponent: 1543record: 5-3 | new rating: 1540 | ||