Callahan, Michael
Current rating: 1564
Record: 57-53-1 (GP) / 13-22 (professional)
- 1999
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 200 | Oaks, Christian (1512) | Won 2-1 | +181572 |
| 4modern | 185 | Carrington, Craig (1456) | Won 2-0 | +161588 |
| 5modern | 54 | Konishi, Keahi (1824) | Won 2-0 | +221610 |
| 6modern | 50 | Smith, Donald (1897) | Won 2-1 | +231633 |
| 7modern | 47 | Andrew, Ian (1741) | Lost 1-2 | -161617 |
| 8modern | 75 | Pearce, Seth (1673) | Lost 1-2 | -171600 |
| 9modern | 124 | Jacobson, Jed (1507) | Lost 0-2 | -201580 |
| 10modern | 280 | Marquez, Adrian (1690) | Lost 0-2 | -161564 |
| top | average opponent: 1662record: 4-4 | new rating: 1564 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 171 | Syrcle, John (1535) | Lost 0-2 | -191574 |
| 2sealed | 817 | Hollander, Matt (1467) | Lost 0-2 | -201554 |
| top | average opponent: 1501record: 0-2 | new rating: 1554 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1604 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 99 | Bradshaw, Blake (1485) | Won 2-1 | +151619 |
| 4sealed | 43 | Bush, Jonathan (1568) | Lost 0-2 | -181601 |
| 5sealed | 219 | Nguyen, Andrew 7973 (1538) | Lost 0-2 | -201581 |
| 6sealed | 432 | Cavin, Brandon (1523) | Won 2-1 | +171598 |
| 7sealed | 346 | Smith, Duncan (1556) | Won 2-1 | +181616 |
| 8sealed | 162 | Swarowski, Robert (1774) | Lost 0-2 | -161600 |
| 9sealed | 210 | De Clerck, Aaron (1459) | Won 2-0 | +161616 |
| 10draft | 50 | Alter, Scott (1774) | Lost 0-2 | -151601 |
| 11draft | 48 | Laid, Jonas (1620) | Lost 0-0 | -181583 |
| 12draft | 42 | Husbands, Brian (1588) | Won 2-1 | +181601 |
| 13draft | 102 | Soh, Yuan Wei (1557) | Lost 0-2 | -191582 |
| 14draft | 80 | Feeman, Dylan (1836) | Lost 1-2 | -131569 |
| 15draft | 73 | Sokol, Greg (1941) | Won 2-1 | +241593 |
| top | average opponent: 1632record: 6-7 | new rating: 1593 | ||
| Pro Tour Shadows over Innistrad (SOI standard) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 2 | Hess, Tony (1579) | Lost 1-2 | -191606 |
| 2draft | 49 | Jin, Hang (1494) | Lost 0-2 | -201586 |
| 3draft | 49 | Ruel, Antoine (1782) | Lost 1-2 | -141572 |
| 4standard | 183 | Heule, Tyler (1602) | Won 2-1 | +181590 |
| 5standard | 157 | Dickmann, Patrick (1858) | Lost 1-2 | -131577 |
| 6standard | 161 | Singh, Devsharan (1659) | Won 2-0 | +201597 |
| 7standard | 163 | Chapin, Patrick (1872) | Won 2-1 | +231620 |
| 8standard | 125 | Swift, Orrin (1731) | Lost 1-2 | -161604 |
| top | average opponent: 1697record: 3-5 | new rating: 1604 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1610 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 270 | DiMaggio, Matthew (1717) | Won 2-1 | +201630 |
| 4standard | 177 | Larsen, Chris (1545) | Lost 1-2 | -201610 |
| 5standard | 184 | Eliot, Dominic (1677) | Won 2-1 | +191629 |
| 6standard | 217 | Allen, Alexander (1512) | Lost 1-2 | -201609 |
| 7standard | 187 | Jackson, Elijah (1483) | Won 2-1 | +161625 |
| 8standard | 236 | Spurgeon, Fox (1565) | Won 2-0 | +171642 |
| 9standard | 85 | Garza, Cesar (1655) | Lost 1-2 | -181624 |
| 10standard | 186 | Candelario, Derek (1607) | Lost 1-2 | -181606 |
| 11standard | 207 | Dentith, Peter (1584) | Lost 0-2 | -191587 |
| 12standard | 216 | Shore, Jared (1531) | Won 2-0 | +171604 |
| 13standard | 193 | Martinez, Lee (1494) | Won 2-0 | +161620 |
| 14standard | 162 | Landweber, Joseph (1527) | Won 2-1 | +171637 |
| 15standard | 115 | Severson, Eric (2012) | Lost 0-2 | -121625 |
| top | average opponent: 1608record: 7-6 | new rating: 1625 | ||
| Grand Prix Seattle-Tacoma 2015 (legacy) | starting rating: 1599 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 136 | Dominguez, Anthony (1466) | Won 2-1 | +161615 |
| 4legacy | 181 | Swailes, Michael (1746) | Lost 1-2 | -161599 |
| 5legacy | 131 | Haghighi, Constantine (1451) | Lost 1-2 | -201579 |
| 6legacy | 469 | White, Peter (1569) | Lost 0-2 | -191560 |
| 7legacy | 454 | Snider, Jason (1427) | Won 2-1 | +161576 |
| 8legacy | 325 | Villa, Emilio (1519) | Won 2-0 | +171593 |
| 9legacy | 258 | Straub, Devon (1531) | Won 2-0 | +171610 |
| top | average opponent: 1530record: 4-3 | new rating: 1610 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 29 | Freeman, Marcelino (1953) | Lost 1-2 | -111562 |
| 4sealed | 151 | Britten, Matt (1629) | Won 2-0 | +191581 |
| 5sealed | 123 | Pitzer, Matthew (1586) | Won 2-1 | +181599 |
| 6sealed | 136 | Tsao, Dennis (1749) | Lost 0-2 | -151584 |
| 7sealed | 140 | Conaboy, Patrick (1511) | Won 2-0 | +171601 |
| 8sealed | 84 | Xu, Gang (1622) | Won 2-1 | +181619 |
| 9sealed | 55 | Akpinar, Tim (1746) | Won 2-1 | +201639 |
| 10draft | 127 | Stella, Daniel (1686) | Won 2-0 | +191658 |
| 11draft | 100 | Gardner, Justin (1535) | Lost 0-2 | -201638 |
| 12draft | 101 | Budkar, Alexander (1601) | Lost 1-2 | -191619 |
| 13draft | 145 | Humphrey, John (1544) | Lost 0-2 | -191600 |
| 14draft | 38 | Haraguchi, Yoshio (1562) | Won 2-1 | +171617 |
| 15draft | 149 | Sung, Simon (1624) | Lost 0-2 | -181599 |
| top | average opponent: 1642record: 7-6 | new rating: 1599 | ||
| Grand Prix Denver 2015 (KTK standard) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 154 | McCaskey, Kevin (1517) | Lost 1-2 | -191563 |
| 3standard | 505 | Tran, Tai (1564) | Lost 1-2 | -181545 |
| 4standard | 480 | Anderson, Craig (1496) | Won 2-1 | +171562 |
| 5standard | 446 | Krantz, Benjamin (1319) | Won 2-1 | +131575 |
| 6standard | 470 | Folger, Carson (1482) | Won 2-1 | +171592 |
| 7standard | 202 | Tong, Bert (1568) | Lost 1-2 | -191573 |
| 8standard | 253 | Gibbons, Matthew (1526) | Won 2-0 | +171590 |
| 9standard | 148 | Davis, Scott (1641) | Lost 1-2 | -171573 |
| top | average opponent: 1514record: 4-4 | new rating: 1573 | ||
| Grand Prix Salt Lake City 2014 (M15 limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 59 | Seck, Ben (1828) | Lost 1-2 | -121451 |
| 4sealed | 138 | Ron, Nitzan (1458) | Lost 1-2 | -171434 |
| 5sealed | 214 | Larsson, Andrew (1499) | Won 2-0 | +191453 |
| 6sealed | 261 | Morlock, Anthony (1547) | Won 2-0 | +191472 |
| 7sealed | 164 | Cook, Joseph (1503) | Won 2-1 | +191491 |
| 8sealed | 92 | Salts, Matt (1704) | Won 2-0 | +221513 |
| 9sealed | 75 | Wilkerson, Joseph (1569) | Won 2-0 | +191532 |
| 10draft | 45 | Wyatt, Taylor (1643) | Won 2-0 | +201552 |
| 11draft | 39 | Liston, Ryley (1574) | Won 2-1 | +181570 |
| 12draft | 11 | Hogan, Kyle (1638) | Won 2-1 | +201590 |
| 13draft | 50 | Brown, Andrew (1808) | Won 2-0 | +211611 |
| 14draft | 8 | England, Jack (1673) | Lost 1-2 | -161595 |
| 15draft | 17 | Mcclain, Josh (1891) | Lost 1-2 | -131582 |
| top | average opponent: 1641record: 9-4 | new rating: 1582 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1390 | Legault, Daric (1547) | Draw 1-1 | +21430 |
| 2sealed | 1467 | Moore, Joseph (1500) | Won 2-0 | +191449 |
| 3sealed | 1625 | Myerscough, Shane (1518) | Won 2-0 | +201469 |
| 4sealed | 1444 | Richard, John (1536) | Won 2-0 | +191488 |
| 5sealed | 1212 | Stolzmann, John (1871) | Lost 0-2 | -111477 |
| 6sealed | 998 | Harris, Spencer (1699) | Lost 0-2 | -141463 |
| 7sealed | 808 | Crimp, Griffin (1483) | Won 2-0 | +181481 |
| 8sealed | 659 | Stewart, Perry (1487) | Lost 0-2 | -181463 |
| top | average opponent: 1580record: 4-3-1 | new rating: 1463 | ||
| Pro Tour Avacyn Restored (Innistrad block) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 51 | Nordahl, Andreas (1837) | Lost 0-2 | -111449 |
| 2block | 183 | Ochoa, David (1926) | Lost 1-2 | -101439 |
| 3block | 185 | Grenier, Daniel (1614) | Lost 0-2 | -151424 |
| 4block | 175 | Jessup, Daniel (1519) | Lost 0-2 | -161408 |
| 5block | 185 | Lowry, William (1648) | Lost 0-2 | -141394 |
| 6draft | 13 | Nagai, Mamoru (1626) | Lost 1-2 | -141380 |
| 7draft | 92 | Reynolds, Ryan (1575) | Won 2-0 | +221402 |
| 8draft | 151 | Thompson, Gerry (1885) | Won 2-1 | +261428 |
| top | average opponent: 1704record: 2-6 | new rating: 1428 | ||
| Grand Prix Salt Lake City 2012 (DKA standard) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 218 | Starkebaum, Ian (1500) | Lost 1-2 | -181440 |
| 3standard | 315 | Danylyshen, Nicholas (1482) | Won 2-0 | +191459 |
| 4standard | 325 | Neiwert, Scott (1456) | Lost 0-2 | -181441 |
| 5standard | 339 | Kriehn, Kyle (1497) | Won 2-0 | +191460 |
| 6standard | 212 | De Souza, Eric (1441) | Won 2-1 | +181478 |
| 7standard | 199 | Xu, David (1514) | Lost 1-2 | -181460 |
| top | average opponent: 1482record: 3-3 | new rating: 1460 | ||
| Grand Prix San Diego 1999 (MMQ limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 30 | Mowshowitz, Zvi (1883) | Won 0-0 | +251491 |
| 5sealed | 8 | Dougherty, Robert (1666) | Lost 0-0 | -151476 |
| 6sealed | 12 | Baron, Paul (1572) | Won 2-1 | +201496 |
| 7sealed | 12 | Cargilo, Shane (1556) | Lost 0-0 | -171479 |
| 8draft | 22 | Keller, Thomas (1547) | Lost 0-2 | -171462 |
| 9draft | 20 | O'Mahoney-Schwartz, Steven (1842) | Lost 0-0 | -111451 |
| 10draft | 30 | Cade, Chris (1495) | Lost 0-2 | -171434 |
| 11draft | 18 | Landriz, Erik (1581) | Won 0-0 | +201454 |
| 12draft | 26 | Hamilton, Stuart (1519) | Won 2-1 | +191473 |
| 13draft | 7 | Murray, Jason (1592) | Lost 0-0 | -151458 |
| top | average opponent: 1625record: 4-6 | new rating: 1458 | ||
| Grand Prix Washington DC 1999 (UDS limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 34 | Kowal, Brian (1483) | Lost 0-0 | -171434 |
| 4sealed | 78 | Weaver, Alexander (1517) | Won 0-0 | +191453 |
| 5sealed | 73 | Mahon, John (1535) | Won 0-0 | +201473 |
| 6sealed | 33 | McKay, Brendan (1553) | Won 0-0 | +191492 |
| 7sealed | 28 | McCord, Scott (1541) | ID | 01492 |
| 8draft | 5 | Alicea, Maxwell (1520) | Won 0-0 | +191511 |
| 9draft | 5 | Watts, Ric (1558) | Lost 0-0 | -171494 |
| 10draft | 23 | Van Cleave, Trey (1675) | Won 0-0 | +211515 |
| 11draft | 18 | Kirpanos, James (1545) | Lost 0-0 | -171498 |
| 12draft | 25 | Kastle, Darwin (1674) | Lost 0-0 | -151483 |
| 13draft | 11 | Newburger, Cary (1538) | Lost 0-0 | -171466 |
| top | average opponent: 1558record: 5-5-1 | new rating: 1466 | ||
| Pro Tour New York 1999 (Urza's block) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 118 | Monteith, Andrew (1500) | Won 2-1 | +181521 |
| 2block | 13 | Dols, Roel (1518) | Won 2-0 | +181539 |
| 3block | 14 | Simpson, Ken (1631) | Won 2-0 | +191558 |
| 4block | 3 | Johnsen, Marius (1526) | Lost 0-2 | -181540 |
| 5block | 36 | Baberowski, Dirk (1541) | Won 2-0 | +181558 |
| 6block | 14 | Pacifico, Andrew (1559) | Lost 0-2 | -181540 |
| 7block | 28 | Van Cleave, Trey (1611) | ID | 01540 |
| 8block | 38 | Johnsen, Marius (1511) | Won 2-1 | +171557 |
| 9block | 17 | Loud, Rich (1565) | Lost 0-2 | -171540 |
| 10block | 34 | Stoltzfus, Timothy (1545) | Lost 1-2 | -181522 |
| 11block | 36 | Bevand, Manuel (1576) | Lost 0-2 | -171505 |
| 12block | 41 | Krouner, Ken (1508) | Lost 1-2 | -181487 |
| 13block | 46 | Hothow, Dominik (1516) | Lost 1-2 | -181469 |
| 14block | 45 | Mitchell, Alex (1473) | Lost 1-2 | -181451 |
| top | average opponent: 1541record: 5-8-1 | new rating: 1451 | ||
| Pro Tour Los Angeles 1999 (USG rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2rochester | 33 | Boling, Cannon (1518) | Lost 1-2 | -181482 |
| 3rochester | 61 | Vincent, Adam (1500) | Won 2-1 | +191501 |
| 4rochester | 89 | Bello, Hashim (1555) | Lost 0-2 | -171484 |
| 5rochester | 48 | Vincent, Adam (1482) | Won 2-0 | +181502 |
| 6rochester | 108 | Murphy, James (1518) | Won 0-0 | +181520 |
| 7rochester | 51 | Hiltunen, Arto (1573) | Lost 0-0 | -171503 |
| top | average opponent: 1524record: 3-3 | new rating: 1503 | ||