Windhorst, Derek
Current rating: 1655
Record: 34-24-2
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1605 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 145 | Kotwica, Christy (1523) | Lost 1-2 | -201585 |
| 2standard | 301 | Malnar, Michael (1482) | Won 2-0 | +161601 |
| 3standard | 337 | Castro, Carlos (1443) | Won 2-1 | +161617 |
| 4standard | 213 | Chalfant, Ryan (1519) | Won 2-0 | +161633 |
| 5standard | 220 | Pastore, Kellen (1960) | Won 2-1 | +241657 |
| 6standard | 61 | de Jong, Michiel (1642) | Won 2-0 | +171674 |
| 7standard | 59 | Chirnside, Adam (1664) | Draw 1-1 | 01674 |
| 8standard | 50 | Matthews, Scott (1615) | Lost 1-2 | -191655 |
| top | average opponent: 1606record: 5-2-1 | new rating: 1655 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1597 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 876 | Paris, William (1462) | Won 2-0 | +151612 |
| 2modern | 149 | Wilson, Richard M (1617) | Lost 1-2 | -181594 |
| 3modern | 1053 | Clark, Jared (1458) | Won 2-0 | +161610 |
| 4modern | 660 | Zabowski, Brian (1486) | Won 2-1 | +161626 |
| 5modern | 272 | Keng, Cameron (1542) | Won 2-0 | +161642 |
| 6modern | 178 | Shuler, Austin (1635) | Lost 0-2 | -181624 |
| 7modern | 369 | Kotok, Malcolm (1553) | Lost 1-2 | -191605 |
| top | average opponent: 1536record: 4-3 | new rating: 1605 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 105 | Stambaugh, Craig (1514) | Lost 1-2 | -191584 |
| 3legacy | 538 | Allbritton, Roy (1461) | Won 2-1 | +151599 |
| 4legacy | 328 | Tubergen, Pieter (1589) | Lost 0-2 | -181581 |
| 5legacy | 523 | Leek, Gary (1483) | Won 2-1 | +161597 |
| 6legacy | 426 | Arthurs, Marshall (1665) | Won 2-0 | +201617 |
| 7legacy | 307 | Luce, Matthew (1516) | Lost 0-2 | -201597 |
| top | average opponent: 1538record: 3-3 | new rating: 1597 | ||
| Grand Prix Miami 2013 (DGM standard) | starting rating: 1617 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 86 | Wisniewski, Kristofer (1517) | Lost 0-2 | -201597 |
| 3standard | 436 | Jetha, David (1484) | Lost 1-2 | -201577 |
| 4standard | 449 | Gardner, Stevon R (1481) | Won 2-1 | +161593 |
| 5standard | 406 | Danto, Michael (1482) | Won 2-1 | +161609 |
| 6standard | 325 | Dupal, Stephen (1451) | Won 2-1 | +151624 |
| 7standard | 192 | Merrill, Kenny (1452) | Lost 0-2 | -211603 |
| top | average opponent: 1478record: 3-3 | new rating: 1603 | ||
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 400 | Garcia, Paul (1481) | Won 2-0 | +161563 |
| 2standard | 36 | Scotton, Jonas (1533) | Won 2-1 | +181581 |
| 3standard | 109 | Hardenberger, Bryan (1568) | Lost 0-2 | -181563 |
| 4standard | 412 | Williamson, Clark (1500) | Won 2-0 | +171580 |
| 5standard | 208 | Hampton, Kevin (1485) | Won 2-1 | +161596 |
| 6standard | 224 | Fitchko, William (1492) | Lost 1-2 | -201576 |
| 7standard | 291 | Long, Mike (1438) | Won 2-1 | +151591 |
| 8standard | 202 | Lingelbach, Cody (1710) | Won 2-1 | +211612 |
| 9standard | 77 | McGuane, John (1622) | Won 2-0 | +181630 |
| 10standard | 98 | WISNIEWSKI, JUSTIN (1600) | Won 2-1 | +171647 |
| 11standard | 35 | Snook, Adam (1557) | Lost 1-2 | -191628 |
| 12standard | 67 | Morawski, Jonathan (1706) | Lost 1-2 | -171611 |
| 13standard | 66 | Versteeg, Carl (1664) | Won 2-0 | +191630 |
| 14standard | 59 | Warner, Adam (1591) | Won 2-0 | +171647 |
| 15standard | 43 | Damo da Rosa, Paulo Vitor (2006) | Lost 0-2 | -111636 |
| 16standard | 57 | Cheung, Terrence (1598) | Lost 1-2 | -191617 |
| top | average opponent: 1597record: 10-6 | new rating: 1617 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 302 | Sanford, Robert (1518) | Won 2-1 | +181520 |
| 3standard | 182 | Gabrys, William P (1518) | Won 2-1 | +181538 |
| 4standard | 193 | Griffin, Matthew [USA] (1865) | Lost 1-2 | -121526 |
| 5standard | 233 | Fitchko, William (1551) | Won 2-0 | +181544 |
| 6standard | 86 | Conrow, Mikael (1543) | Lost 0-2 | -181526 |
| 7standard | 202 | Johnson, Nicholas d (1531) | Won 2-0 | +181544 |
| 8standard | 106 | Hsu, Bernard (1510) | Lost 0-2 | -181526 |
| 9standard | 191 | Gosselin, Christopher (1680) | Won 2-0 | +211547 |
| top | average opponent: 1589record: 5-3 | new rating: 1547 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 288 | Raupach, Donald B (1500) | Draw 1-1 | 01500 |
| 2standard | 344 | Beverley, Matthew (1686) | Lost 1-2 | -151485 |
| 3standard | 500 | Wagstaff, Evan (1481) | Lost 0-2 | -181467 |
| 4standard | 646 | STAROPOLI, ROY m (1463) | Won 2-0 | +181485 |
| 5standard | 543 | Smith, Corey R (1482) | Won 2-0 | +181503 |
| 6standard | 436 | Meadows, Zachary (1499) | Won 2-0 | +181521 |
| 7standard | 327 | Smith, Daniel (1489) | Lost 0-2 | -191502 |
| 8standard | 274 | Pickens, Joshua (1496) | Lost 0-1 | -181484 |
| 9standard | 208 | Demi, Stephen (1464) | Won 2-0 | +181502 |
| top | average opponent: 1507record: 4-4-1 | new rating: 1502 | ||