Herg, Cornell
Current rating: 1483
Record: 15-18-2
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 164 | McPoland, Stephen (1535) | Lost 1-2 | -171454 |
| 4modern | 806 | Miller, Ben (1577) | Lost 0-2 | -161438 |
| 5modern | 1150 | Wallace, Paul (1382) | Lost 0-2 | -191419 |
| 6modern | 1053 | Tan, Jowie (1629) | Won 2-0 | +221441 |
| 7modern | 813 | Wright, Mark (1439) | Won 2-0 | +181459 |
| 8modern | 708 | Shaw, Andrew (1523) | Won 2-0 | +191478 |
| 9modern | 551 | Richard, Francois (1621) | Won 2-1 | +211499 |
| 10modern | 386 | Hohman, Christopher (1640) | Lost 1-2 | -161483 |
| 11modern | 410 | Webb, Cheyenne (1479) | Draw 1-1 | 01483 |
| top | average opponent: 1536record: 4-4-1 | new rating: 1483 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 341 | Thor, Thown (1557) | Won 2-0 | +201486 |
| 4sealed | 17 | Vega Parra, Francisco (1572) | Draw 1-1 | +11487 |
| 5sealed | 158 | Cyze, David (1573) | Lost 0-2 | -161471 |
| top | average opponent: 1567record: 1-1-1 | new rating: 1471 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 49 | Baerg, Alexander (1500) | Won 2-1 | +191492 |
| 4legacy | 44 | Markwardt, Jerad (1492) | Won 2-0 | +181510 |
| 5legacy | 137 | Gellert, Kyle (1843) | Lost 1-2 | -121498 |
| 6legacy | 219 | Luebbert, Ryan (1515) | Lost 1-2 | -181480 |
| 7legacy | 447 | Bates, Harrison (1529) | Lost 1-2 | -171463 |
| 8legacy | 420 | Jeffery, Russ (1436) | Won 2-1 | +171480 |
| 9legacy | 477 | Kong, Colin (1678) | Lost 1-2 | -141466 |
| top | average opponent: 1570record: 3-4 | new rating: 1466 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1491 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 656 | Wagner, Clayton (1500) | Won 2-0 | +181509 |
| 2modern | 438 | Cemo, Adam (1518) | Lost 0-2 | -181491 |
| 3modern | 870 | Yu, Puyan (1501) | Won 2-0 | +191510 |
| 4modern | 570 | Cummings, Brandon (1492) | Lost 1-2 | -191491 |
| 5modern | 558 | Pait, Robert (1505) | Lost 1-2 | -181473 |
| top | average opponent: 1503record: 2-3 | new rating: 1473 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2 | Kotcher, Tom (1500) | Lost 0-2 | -181469 |
| 2sealed | 250 | Ang, Wei Zou (1628) | Won 2-0 | +211490 |
| 3sealed | 210 | Dowling, Peter (1519) | Won 2-1 | +191509 |
| 4sealed | 190 | Nguyen, Tony (1519) | Lost 1-2 | -181491 |
| top | average opponent: 1542record: 2-2 | new rating: 1491 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 37 | Clark, Jason (1553) | Lost 0-2 | -171483 |
| 2standard | 491 | Huang, Earl (1482) | Lost 1-2 | -181465 |
| 3standard | 814 | Peters, Steven (1453) | Won 2-0 | +181483 |
| 4standard | 594 | Maclise, Nathaniel (1481) | Won 2-1 | +181501 |
| 5standard | 433 | Reyes, Victor (1540) | Won 2-1 | +181519 |
| 6standard | 343 | Grine, Gary (1519) | Lost 1-2 | -181501 |
| 7standard | 426 | Chen, Michael (1710) | Lost 0-2 | -141487 |
| top | average opponent: 1534record: 3-4 | new rating: 1487 | ||