Gaffner, Randall
Current rating: 1705 (#6201)
Record: 31-23-2
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1551 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 217 | Rockweit, Anthony (1612) | Won 2-1 | +191570 |
| 2standard | 103 | Huber, Andrew (1518) | Won 2-1 | +171587 |
| 3standard | 134 | Johnston, James (1704) | Lost 1-2 | -161571 |
| 4standard | 403 | Naskrent, Jon (1579) | Won 2-0 | +191590 |
| 5standard | 241 | Seville, Scott (1700) | Won 2-1 | +201610 |
| 6standard | 64 | Yamamoto, Kentaro (2062) | Won 2-1 | +251635 |
| 7standard | 55 | Linne, Mason (1758) | Lost 0-2 | -161619 |
| 8standard | 95 | Patterson, Ryan (1821) | Won 2-0 | +221641 |
| 9standard | 69 | Nickolai, Matthew (1805) | Won 2-0 | +211662 |
| 10standard | 69 | Garrant, Mitchell (1707) | Won 2-0 | +191681 |
| 11standard | 26 | Pitts, Jason (1583) | Lost 0-2 | -201661 |
| 12standard | 64 | Green, Jeff (1855) | Won 2-1 | +221683 |
| 13standard | 30 | Ragsdale, Adam (1975) | Lost 0-2 | -131670 |
| 14standard | 47 | Hernandez, Elias (1596) | Won 2-1 | +161686 |
| 15standard | 48 | Low, Seth (1710) | Won 2-1 | +191705 |
| top | average opponent: 1732record: 11-4 | new rating: 1705 | ||
| Grand Prix Minneapolis 2017 (HOU standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 84 | Bradley-Vogt, Jeremy (1599) | Lost 1-2 | -161465 |
| 3standard | 443 | Wiley, Jacob (1530) | Lost 0-2 | -161449 |
| 4standard | 412 | Winstead, Forrest (1464) | Won 2-0 | +181467 |
| 5standard | 406 | Sayner, Nick (1537) | Won 2-1 | +191486 |
| 6standard | 279 | Spaeth-Olson, Cyrus (1516) | Won 2-0 | +191505 |
| 7standard | 108 | Torgerson, Leif (1636) | Won 2-1 | +201525 |
| 8standard | 61 | Ulmer, Chris (1558) | Lost 0-2 | -171508 |
| 9standard | 147 | Larson, Jake (1543) | Won 2-1 | +181526 |
| 10standard | 560 | Schulte, Chris (1488) | Won 2-1 | +181544 |
| 11standard | 513 | Mount, Brendan (1642) | Lost 0-2 | -171527 |
| 12standard | 560 | Thompson, Brandon (1590) | Draw 1-1 | +21529 |
| 13standard | 561 | VanEvery, Kevin (1559) | Lost 0-2 | -181511 |
| 14standard | 564 | Herrera, Gregory (1535) | Won 2-1 | +191530 |
| 15standard | 549 | Magnuson, Max (1725) | Won 2-0 | +211551 |
| top | average opponent: 1566record: 8-5-1 | new rating: 1551 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 297 | Bryan, Wayland (1507) | Lost 0-2 | -171472 |
| 3sealed | 534 | Downing, Ian (1557) | Won 2-1 | +191491 |
| 4sealed | 536 | Watson, Owen (1522) | Won 2-1 | +191510 |
| 5sealed | 269 | Miller, Jamie (1509) | Won 2-1 | +181528 |
| 6sealed | 87 | Brown, Justin (1534) | Won 2-1 | +181546 |
| 7sealed | 37 | Smith, Zachary (1570) | Lost 0-2 | -181528 |
| 8sealed | 229 | Yeh, Chih-Cheng (1918) | Lost 1-2 | -111517 |
| 9sealed | 280 | Van Vliet III, Leonard (1333) | Won 2-0 | +151532 |
| 10draft | 710 | Hutt, Sean (1592) | Lost 0-2 | -171515 |
| 11draft | 831 | Castillo, Zaryn (1607) | Lost 0-2 | -171498 |
| 13draft | 742 | Murray, Ian (1546) | Lost 0-2 | -171481 |
| top | average opponent: 1563record: 5-6 | new rating: 1481 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 240 | Vanko, Thomas (1500) | Won 2-1 | +191483 |
| 2modern | 330 | Kamerow, Simon (1482) | Lost 1-2 | -181465 |
| 3modern | 641 | Laird, Russell (1500) | Won 2-0 | +181483 |
| 4modern | 545 | Parnell, Andrew (1511) | Lost 1-2 | -171466 |
| 5modern | 578 | Stonestreet, Taylor (1544) | Lost 0-2 | -171449 |
| 6modern | 739 | Wall, Keith (1430) | Won 2-0 | +181467 |
| 7modern | 599 | Johnson, Tony (1504) | Won 2-1 | +191486 |
| 8modern | 397 | Male, Nick (1649) | Won 2-1 | +211507 |
| 9modern | 293 | Li, Jianan (1541) | Lost 1-2 | -181489 |
| top | average opponent: 1518record: 5-4 | new rating: 1489 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 68 | Goheen, Rigel (1500) | Won 2-0 | +181518 |
| 2modern | 95 | Wren, Bradley (1511) | Lost 0-2 | -181500 |
| 3modern | 725 | Simms, Cole (1468) | Lost 0-2 | -191481 |
| 4modern | 895 | Eck, James (1520) | Lost 1-2 | -171464 |
| 5modern | 1038 | Rocus, Andy (1474) | Won 2-1 | +181482 |
| 6modern | 917 | Blubaugh, Lachlan (1484) | Draw 1-1 | 01482 |
| 7modern | 722 | DiMatteo, Joseph (1481) | Lost 0-2 | -181464 |
| top | average opponent: 1491record: 2-4-1 | new rating: 1464 | ||