Korczyk, David
Current rating: 1466
Record: 9-12-2
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 239 | Williams, Gabriel (1550) | Won 2-1 | +201454 |
| 2modern | 171 | Zhao, Tianrui (1601) | Lost 0-2 | -161438 |
| 3modern | 1225 | Wade, Justin (1554) | Lost 0-2 | -151423 |
| 4modern | 1124 | Deichler, Fredrick (1481) | Lost 1-2 | -171406 |
| 5modern | 1306 | Diaz, Matthew (1549) | Lost 1-2 | -161390 |
| 6modern | 1218 | Sanchez, Rudy (1493) | Won 2-0 | +201410 |
| 7modern | 1060 | Finol, David (1430) | Won 2-0 | +181428 |
| 8modern | 825 | Reppenhagen, Michael (1484) | Won 2-1 | +191447 |
| 9modern | 705 | Chavarria, George (1498) | Won 2-0 | +191466 |
| top | average opponent: 1516record: 5-4 | new rating: 1466 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 130 | Wolfson, David (1500) | Won 2-1 | +191464 |
| 2modern | 139 | Zimmerman, Nick (1496) | Lost 1-2 | -171447 |
| 3modern | 679 | Handy, Jacob (1505) | Won 2-0 | +191466 |
| 4modern | 622 | Mork, Elliot (1491) | Lost 0-2 | -181448 |
| 5modern | 555 | Albers, Tyler (1471) | Lost 0-2 | -171431 |
| 6modern | 649 | Martinez, Carlos (1534) | Lost 1-2 | -171414 |
| 7modern | 735 | Schneider, Avi (1464) | Won 2-1 | +191433 |
| 8modern | 562 | Bormet, Aaron (1399) | Lost 1-2 | -181415 |
| 9modern | 520 | Maune, Sarah (1468) | Won 2-0 | +191434 |
| top | average opponent: 1481record: 4-5 | new rating: 1434 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 812 | Topping, Benjamin (1542) | Draw 1-1 | +11501 |
| 2modern | 625 | Rowe, Ryan (1456) | Lost 1-2 | -191482 |
| 3modern | 1030 | Poliskey, Corey (1482) | Draw 1-1 | 01482 |
| 4modern | 1132 | Widmer, Ryan (1482) | Lost 1-2 | -181464 |
| 5modern | 1146 | Townsend, Heather (1411) | Lost 1-2 | -191445 |
| top | average opponent: 1474record: 0-3-2 | new rating: 1445 | ||