Callahan, Regan
Current rating: 1554
Record: 22-21
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 519 | Huskey, Justin (1500) | Lost 0-2 | -171470 |
| 2standard | 559 | Madrigal, Max (1497) | Won 2-1 | +181488 |
| 3standard | 649 | Hayes, Casey (1500) | Won 2-0 | +181506 |
| 4standard | 296 | De La Loza, Alejandro (1605) | Won 2-1 | +201526 |
| 5standard | 300 | Askelson, Tyler (1517) | Lost 1-2 | -181508 |
| 6standard | 391 | Ortiz, Lance (1584) | Won 2-0 | +191527 |
| 7standard | 224 | Beauregard, Brandon (1520) | Lost 1-2 | -181509 |
| 8standard | 377 | Williams, Matthew (1521) | Won 2-0 | +191528 |
| 9standard | 315 | Beard, Joshua (1585) | Won 2-0 | +191547 |
| 10standard | 217 | Campbell, Nathan (1540) | Lost 0-2 | -191528 |
| 11standard | 223 | Pritchard, Branden (1548) | Won 2-0 | +191547 |
| 12standard | 166 | Berni, Roberto (1716) | Won 2-1 | +211568 |
| 13standard | 126 | Weston, Robert (1568) | Won 2-1 | +181586 |
| 14standard | 103 | Holt, Andrew (1620) | Lost 0-2 | -171569 |
| 15standard | 131 | Fei, Xinyu (1758) | Lost 0-2 | -151554 |
| top | average opponent: 1572record: 9-6 | new rating: 1554 | ||
| Grand Prix San Antonio 2012 (RTR standard) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 256 | Ferreira, Nicolas (1545) | Won 2-1 | +191473 |
| 2standard | 27 | de la Garza, Lisandro (1571) | Lost 1-2 | -161457 |
| 3standard | 189 | Sundrani, Vikas (1516) | Lost 1-2 | -171440 |
| 4standard | 352 | Swanzy, Paul (1447) | Won 2-1 | +181458 |
| 5standard | 269 | Mireles, Roni (1503) | Won 2-1 | +191477 |
| 6standard | 212 | Taylor, Levi (1453) | Won 2-0 | +181495 |
| 7standard | 92 | Sanchez, Kyle (1759) | Lost 0-2 | -141481 |
| 8standard | 153 | Henderson, Jeremy (1520) | Won 2-0 | +191500 |
| 9standard | 116 | Chilbert, Colin (1813) | Lost 1-2 | -131487 |
| top | average opponent: 1570record: 5-4 | new rating: 1487 | ||
| Grand Prix Austin 2012 (ISD limited) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 154 | Vazquez, Juan (1482) | Lost 0-2 | -191489 |
| 3sealed | 75 | Cartwright, Adam (1500) | Lost 1-2 | -171472 |
| 4sealed | 371 | Garner, Matt (1465) | Lost 1-2 | -181454 |
| top | average opponent: 1482record: 0-3 | new rating: 1454 | ||
| Grand Prix Dallas-Fort Worth 2011 (MBS standard) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 118 | Durrant, Alex E (1500) | Won 2-0 | +191504 |
| 2standard | 3 | Laroche, John (1518) | Won 2-0 | +181522 |
| 3standard | 127 | Forner, Matthew (1650) | Lost 0-2 | -161506 |
| 4standard | 286 | Seaver, Scott A (1496) | Lost 1-2 | -181488 |
| 5standard | 428 | Harris, David R (1504) | Won 2-1 | +181506 |
| 6standard | 264 | Conrad, Tanner (1520) | Won 2-0 | +191525 |
| 7standard | 176 | Cruse, William (1601) | Won 2-0 | +191544 |
| 8standard | 142 | Cabanero, Erik (1521) | Lost 1-2 | -191525 |
| 9standard | 134 | Baxter, Steven (1549) | Lost 1-2 | -171508 |
| top | average opponent: 1540record: 5-4 | new rating: 1508 | ||
| Grand Prix Houston 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 88 | Garner, Matt (1500) | Won 2-0 | +181518 |
| 2extended | 6 | Thompson, Keith (1573) | Lost 1-2 | -171501 |
| 3extended | 156 | Ravitz, Joshua (1676) | Lost 0-2 | -151486 |
| 4extended | 218 | Johnson, Nic (1483) | Lost 0-2 | -181468 |
| 5extended | 246 | Yaeger, Ethan (1464) | Won 2-0 | +181486 |
| 6extended | 194 | Liberto, Lance (1449) | Won 2-0 | +171503 |
| 7extended | 151 | Walters, Eric (1499) | Lost 0-2 | -181485 |
| top | average opponent: 1521record: 3-4 | new rating: 1485 | ||