Williamson, Michael
Current rating: 1575
Record: 47-43-3 (GP) / 6-15 (professional)
Pro Tour Osaka 2002Grand Prix Philadelphia 2002Pro Tour Houston 2002Grand Prix Boston 2003Grand Prix New Jersey 2006Grand Prix Los Angeles 2009Grand Prix Oakland 2010Grand Prix Philadelphia 2012Grand Prix Providence 2015Grand Prix New York 2016Grand Prix Providence 2016Grand Prix New Jersey 2017 (std)Grand Prix Richmond 2017Pro Tour DominariaGrand Prix New Jersey 2018
| Grand Prix New Jersey 2018 (GRN standard) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 276 | Saders, Ben (1500) | Lost 0-2 | -191575 |
| top | record: 0-1 | new rating: 1575 | ||
| Pro Tour Dominaria (DOM standard) | starting rating: 1638 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 121 | Lipp, Scott (1918) | Won 2-0 | +231661 |
| 2draft | 118 | Barnes, Craig (1791) | Lost 0-2 | -151646 |
| 3draft | 115 | Gammaitoni, Eli (1642) | Lost 1-2 | -181628 |
| 4standard | 172 | Matignon, Guillaume (1900) | Lost 0-2 | -141614 |
| 5standard | 160 | Benczedi, Jozsef (1693) | Lost 0-2 | -161598 |
| 6standard | 208 | Rost, Daniel (1639) | Lost 0-2 | -171581 |
| 7standard | 215 | Kudva, Vikram (1941) | Won 2-0 | +241605 |
| 8standard | 179 | Takahashi, Yuta (2031) | Lost 1-2 | -111594 |
| top | average opponent: 1819record: 2-6 | new rating: 1594 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1610 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 212 | Geiss, Andrew (1560) | Lost 0-2 | -181592 |
| 2sealed | 373 | Hines, Pete (1450) | Won 2-1 | +151607 |
| 3sealed | 622 | Alfonso Florez, Ricardo Alexander (1500) | Won 2-1 | +161623 |
| 4sealed | 294 | Tautic, Raymond (1648) | Lost 1-2 | -181605 |
| 5sealed | 587 | Keck, Frederick (1502) | Won 2-1 | +171622 |
| 6sealed | 421 | Reedy, Joshua (1502) | Won 2-1 | +151637 |
| 7sealed | 296 | Calcano, Christian (1850) | Won 2-1 | +221659 |
| 8sealed | 100 | Roepke, Chris (1646) | Lost 1-2 | -181641 |
| 9sealed | 308 | Mascio, Anthony (1716) | Won 2-1 | +191660 |
| 10draft | 755 | Poindexter, Stephen (1744) | Won 2-0 | +201680 |
| 11draft | 740 | Winata, Andrew (1562) | Won 2-0 | +161696 |
| 12draft | 735 | Dieter, Jonathan (1624) | Lost 1-2 | -201676 |
| 13draft | 689 | Ward, Daniel (1839) | Lost 1-2 | -151661 |
| 14draft | 669 | Hurtado, Oscar (1377) | Lost 1-2 | -231638 |
| top | average opponent: 1609record: 8-6 | new rating: 1638 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1617 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 19 | Rousseau, Patrick (1521) | Lost 0-2 | -201597 |
| 2standard | 439 | Chen, Sizhe (1475) | Lost 1-2 | -201577 |
| 3standard | 753 | Corley, John (1365) | Won 2-1 | +141591 |
| 4standard | 673 | Cilione, Nicki (1364) | Won 2-0 | +141605 |
| 5standard | 496 | Bartley, Matthew (1873) | Won 2-0 | +231628 |
| 6standard | 331 | Polvino, Matthew (1795) | Won 2-0 | +211649 |
| 7standard | 283 | Martell, William (1616) | Lost 1-2 | -191630 |
| 8standard | 437 | Cramer, Zach (1544) | Lost 1-2 | -201610 |
| top | average opponent: 1569record: 4-4 | new rating: 1610 | ||
| Grand Prix Providence 2016 (KLD standard) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 102 | Ardizzone, Thomas (1439) | Won 2-1 | +161546 |
| 2standard | 90 | Markarian, Erik (1342) | Won 2-1 | +151561 |
| 3standard | 220 | Gouveia, Adam (1613) | Lost 1-2 | -171544 |
| 4standard | 363 | Green, Dustin (1543) | Won 2-1 | +181562 |
| 5standard | 192 | Barkon, Daniel (1589) | Lost 0-2 | -181544 |
| 6standard | 269 | Flete, George (1422) | Won 2-0 | +161560 |
| 7standard | 213 | Cothias, Luciano (1538) | Won 2-1 | +181578 |
| 8standard | 114 | Pena, Phillip (1578) | Won 2-1 | +181596 |
| 9standard | 77 | Martinez II, Eddie (1601) | Won 2-1 | +181614 |
| 10standard | 383 | Gaynor, Jonah (1805) | Lost 0-2 | -151599 |
| 11standard | 415 | Madsen, Benton (1594) | Lost 0-2 | -181581 |
| 12standard | 452 | Delano, Jonathan (1709) | Won 2-1 | +201601 |
| 13standard | 421 | Friedman, Matt (1535) | Won 2-0 | +171618 |
| 14standard | 370 | Chen, Xin [USA] (1596) | Won 2-0 | +181636 |
| 15standard | 380 | Patella, Keith (1573) | Lost 1-2 | -191617 |
| top | average opponent: 1565record: 10-5 | new rating: 1617 | ||
| Grand Prix New York 2016 (SOI standard) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 130 | Polyakov, Alexander (1691) | Won 2-1 | +221494 |
| 3standard | 428 | Bergerac, Michael (1613) | Won 2-0 | +201514 |
| 4standard | 150 | Deltour, Louis (1952) | Won 2-0 | +261540 |
| 5standard | 118 | Manfield, Seth (2210) | Lost 0-2 | -81532 |
| 6standard | 180 | Martinez, Mario E (1670) | Won 2-0 | +211553 |
| 7standard | 102 | Dissinger, Cory (1752) | Won 2-0 | +211574 |
| 8standard | 41 | Cohen, Justin (1979) | Lost 1-2 | -111563 |
| 9standard | 153 | Schmuckler, Brett (1716) | Lost 0-2 | -151548 |
| 10standard | 173 | Older, Patrick (1653) | Lost 0-2 | -161532 |
| 11standard | 230 | Pikula, Chris (1865) | Won 2-1 | +241556 |
| 12standard | 208 | Gardner, Garrett (1778) | Lost 0-2 | -141542 |
| 13standard | 199 | Martell, Tom (1859) | Lost 1-2 | -131529 |
| 14standard | 206 | Fontes, Carlos (1552) | Lost 0-2 | -171512 |
| 15standard | 189 | Wargo, Forrest (1531) | Won 2-1 | +181530 |
| top | average opponent: 1773record: 7-7 | new rating: 1530 | ||
| Grand Prix Providence 2015 (DTK standard) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 52 | Hoffman, Jonathan (1483) | Won 2-1 | +181473 |
| 3standard | 44 | Tomajko, Oliver (1843) | Won 2-1 | +251498 |
| 4standard | 113 | Dickmann, Patrick (2045) | Lost 0-2 | -91489 |
| 5standard | 154 | Fusco, Roman (1514) | Lost 1-2 | -181471 |
| 6standard | 253 | Muller, Paul (1461) | Won 2-0 | +181489 |
| 7standard | 202 | Holewiak, Andrew (1535) | Lost 1-2 | -171472 |
| top | average opponent: 1647record: 3-3 | new rating: 1472 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 828 | Wadding, Edward (1500) | Lost 0-0 | -181453 |
| 2sealed | 850 | Di Savino, Jo (1482) | Won 2-0 | +191472 |
| 3sealed | 751 | Fuller, Josh (1505) | Draw 1-1 | 01472 |
| 4sealed | 812 | Ridall, Jack (1500) | Lost 0-2 | -171455 |
| top | average opponent: 1497record: 1-2-1 | new rating: 1455 | ||
| Grand Prix Oakland 2010 (extended) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 162 | Perrone, Vinnie (1500) | Won 2-1 | +191452 |
| 2extended | 46 | Kwong, Winston (1572) | Lost 0-2 | -161436 |
| 3extended | 151 | Carvalho, Mateus (1500) | Won 2-0 | +191455 |
| 4extended | 200 | Borja, Jofil (1517) | Won 2-1 | +201475 |
| 5extended | 127 | Schalin, Ville (1597) | Won 2-0 | +201495 |
| 6extended | 94 | Janz, Carl (1611) | Lost 1-2 | -161479 |
| 7extended | 104 | Ochoa, David (2075) | Lost 0-2 | -81471 |
| top | average opponent: 1625record: 4-3 | new rating: 1471 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 11 | Clifford, Ben (1500) | Lost 0-2 | -181489 |
| 2extended | 247 | Hazelton, Takashi (1429) | Lost 0-2 | -191470 |
| 3extended | 330 | Callenback, Avery (1462) | Lost 0-2 | -181452 |
| 4extended | 390 | Sweitzer, Adam (1412) | Lost 0-2 | -191433 |
| top | average opponent: 1451record: 0-4 | new rating: 1433 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 252 | LaBelle, Mark (1500) | Won 2-0 | +181498 |
| 2sealed | 38 | Jacks, Eric (1518) | Won 2-0 | +191517 |
| 3sealed | 121 | Ford, James D (1535) | Won 2-1 | +181535 |
| 4sealed | 42 | Barker, Zach (1553) | Won 2-0 | +181553 |
| 5sealed | 25 | da Costa Cabral, Bernardo (1787) | Lost 0-2 | -141539 |
| 6sealed | 100 | Palkon, Theodore (1543) | Lost 0-2 | -171522 |
| 7sealed | 137 | Phillips, Cedric (1712) | Lost 1-2 | -151507 |
| top | average opponent: 1593record: 4-3 | new rating: 1507 | ||
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 81 | Cardinal, Kevin (1518) | Won 2-1 | +191495 |
| 3sealed | 51 | Cory, Matthew (1537) | Lost 0-2 | -171478 |
| 4sealed | 92 | Snyder, Derek (1537) | Draw 1-1 | +11479 |
| 5sealed | 137 | Mounsteven, Jeremy (1517) | Draw 1-1 | 01479 |
| 6sealed | 148 | Sutherland, Michael (1502) | Won 2-0 | +191498 |
| 7sealed | 112 | Short, Michael (1500) | Lost 0-2 | -181480 |
| top | average opponent: 1518record: 2-2-2 | new rating: 1480 | ||
| Pro Tour Houston 2002 (extended) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 45 | Martin, Quentin (1708) | Won 2-1 | +221501 |
| 2extended | 65 | Lynch, Brian (1488) | Lost 0-2 | -181483 |
| 3extended | 83 | Hubble, Bryan (1746) | Won 2-1 | +231506 |
| 4extended | 54 | Doi, Asuka (1524) | Won 2-0 | +181524 |
| 5extended | 32 | Berkowitz, Jordan (1577) | Lost 0-2 | -171507 |
| 6extended | 63 | Stanford, David (1536) | Lost 0-2 | -181489 |
| 7extended | 82 | Boeken, Noah (1749) | Lost 1-2 | -131476 |
| top | average opponent: 1618record: 3-4 | new rating: 1476 | ||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 126 | Cooper, Christopher (1523) | Won 2-1 | +191472 |
| 2sealed | 79 | Heiss, Nathan (1638) | Lost 1-2 | -151457 |
| 3sealed | 210 | Jennings-Wyckoff, James (1465) | Won 2-0 | +191476 |
| 4sealed | 136 | Hammond, Matthew (1517) | Won 2-1 | +181494 |
| 5sealed | 75 | Job, Jonathan (1578) | Won 2-0 | +201514 |
| 6sealed | 76 | Leader-Smith, Alex (1549) | Lost 0-2 | -181496 |
| 7sealed | 90 | Conway, Douglas (1530) | Lost 1-2 | -171479 |
| top | average opponent: 1543record: 4-3 | new rating: 1479 | ||
| Pro Tour Osaka 2002 (Odyssey block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 83 | Braun, Oliver (1668) | Lost 1-2 | -151485 |
| 2block | 95 | Twiefel, Torben (1663) | Lost 0-2 | -151470 |
| 3block | 126 | Steinsdoerfer, Daniel (1714) | Lost 1-2 | -131457 |
| 4block | 131 | Stokinger, Andrew (1703) | Lost 1-2 | -141443 |
| 5block | 124 | Ellis, Chad (1674) | Won 2-1 | +221465 |
| 7block | 87 | Fung, Jeff (1806) | Lost 1-2 | -121453 |
| top | average opponent: 1705record: 1-5 | new rating: 1453 | ||