Madsen, William
Current rating: 1594
Record: 43-40-1
| Grand Prix Indianapolis 2017 (HOU limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 177 | Taylor, Zach (1580) | Lost 0-2 | -171511 |
| 2sealed | 446 | James, Harold (1469) | Won 2-1 | +171528 |
| 3sealed | 326 | Woodring, Esteban (1487) | Won 2-0 | +171545 |
| 4sealed | 160 | Esselman, Doug (1571) | Won 2-1 | +191564 |
| 5sealed | 245 | Tierney, Patrick (1933) | Won 2-1 | +241588 |
| 6sealed | 64 | Manning, Brandon (1585) | Won 2-1 | +181606 |
| 7sealed | 33 | Fetty, Jonathan (1714) | Won 2-0 | +201626 |
| 8sealed | 35 | Lusk, Abraham (1834) | Lost 0-2 | -141612 |
| 9sealed | 43 | Wise, Steve (1789) | Won 2-1 | +211633 |
| 10draft | 148 | Fei, Xinyu (1802) | Won 2-1 | +211654 |
| 11draft | 142 | Levstek, Shawn (1600) | Lost 1-2 | -191635 |
| 12draft | 53 | Hart, Richard (1606) | Won 2-0 | +181653 |
| 13draft | 82 | Drane, Caleb (1518) | Lost 1-2 | -211632 |
| 14draft | 94 | Askoul, Basem (1633) | Lost 1-2 | -181614 |
| 15draft | 40 | Ernst, David (1498) | Lost 1-2 | -201594 |
| top | average opponent: 1641record: 9-6 | new rating: 1594 | ||
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 773 | Schneider, Daniel (1527) | Lost 1-2 | -181512 |
| 2standard | 830 | Robinson, John (1516) | Won 2-0 | +181530 |
| 3standard | 832 | Birdsall, Robert (1500) | Won 2-1 | +181548 |
| 4standard | 687 | Wallace, Chris (1442) | Won 2-0 | +161564 |
| 5standard | 707 | Freedman, Henry (1569) | Lost 0-2 | -181546 |
| 6standard | 653 | Hanson, Andrew J (1562) | Lost 1-2 | -181528 |
| top | average opponent: 1519record: 3-3 | new rating: 1528 | ||
| Grand Prix Cincinnati 2014 (BNG standard) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 511 | Phelps, Daniel (1502) | Won 2-0 | +171591 |
| 2standard | 74 | Austin, Cary (1434) | Lost 1-2 | -211570 |
| 3standard | 651 | Leung, Kevin (1420) | Lost 1-2 | -211549 |
| 4standard | 712 | Adkins, Cody (1480) | Lost 1-2 | -191530 |
| top | average opponent: 1459record: 1-3 | new rating: 1530 | ||
| Grand Prix Louisville 2013 (THS standard) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 288 | Haynes, Justin (1499) | Draw 1-1 | -11559 |
| 2standard | 355 | Broussard, Marshall (1500) | Lost 1-2 | -191540 |
| 3standard | 510 | Brown, Aaron (1414) | Won 2-0 | +151555 |
| 4standard | 438 | Reinschreiber, Zachary (1557) | Won 2-0 | +181573 |
| 5standard | 341 | Cawood, Bradley (1518) | Won 2-0 | +171590 |
| 6standard | 249 | Martin, Elias A (1594) | Won 2-1 | +181608 |
| 7standard | 196 | Maginnis, Peter (1741) | Lost 1-2 | -151593 |
| 8standard | 259 | Gregersen, Ryan (1562) | Lost 0-2 | -191574 |
| top | average opponent: 1548record: 4-3-1 | new rating: 1574 | ||
| Grand Prix Columbus 2012 (modern) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 23 | Dewiel, Mark A (1500) | Won 2-0 | +171584 |
| 2modern | 112 | Ivey, Brenna (1447) | Lost 0-2 | -211563 |
| 3modern | 354 | Nelson, Kevin (1499) | Won 2-0 | +171580 |
| 4modern | 332 | Herr, Drew (1472) | Lost 0-2 | -201560 |
| 5modern | 323 | Dill, Ray (1500) | Won 2-1 | +171577 |
| 6modern | 195 | Coval, Brian (1607) | Lost 0-2 | -171560 |
| top | average opponent: 1504record: 3-3 | new rating: 1560 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 582 | Cooperfauss, Andrew (1473) | Lost 0-2 | -181488 |
| 2legacy | 656 | Egan, Sean (1482) | Won 2-0 | +181506 |
| 3legacy | 558 | Davidson, Alec (1522) | Lost 0-2 | -181488 |
| 4legacy | 641 | Murphy, Sean (1514) | Won 2-1 | +181506 |
| 5legacy | 593 | King, Stephen (1893) | Lost 0-2 | -111495 |
| 6legacy | 591 | Taylor, Timothy M (1481) | Won 2-1 | +181513 |
| 7legacy | 539 | Clanton, Richard (1506) | Won 2-0 | +181531 |
| 8legacy | 506 | Balling, Victor (1570) | Won 2-0 | +181549 |
| 9legacy | 481 | Atkinson, Mcihael (1535) | Won 2-0 | +181567 |
| top | average opponent: 1553record: 6-3 | new rating: 1567 | ||
| Grand Prix Indianapolis 2008 (SHM limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 123 | Winn, Tyler (1497) | Lost 1-2 | -171426 |
| 2sealed | 360 | Vander Ploeg, Scott D (1482) | Lost 1-2 | -171409 |
| 3sealed | 443 | Chilcote, Zachary (1464) | Lost 1-2 | -171392 |
| 4sealed | 471 | Corey, Max (1446) | Won 2-1 | +191411 |
| 5sealed | 381 | Steele, Jeremy (1463) | Won 2-0 | +191430 |
| 6sealed | 300 | Soungpanya, Jinda A (1481) | Won 2-0 | +191449 |
| 7sealed | 233 | Sellers, Daniel (1502) | Won 2-0 | +191468 |
| 8sealed | 171 | Landusky, Thomas (1521) | Won 2-1 | +191487 |
| 9sealed | 137 | Drahos, Dan (1542) | Won 2-1 | +191506 |
| top | average opponent: 1488record: 6-3 | new rating: 1506 | ||
| Grand Prix Columbus 2007 (legacy) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 53 | Uhler, Adam (1500) | Won 2-0 | +191497 |
| 2legacy | 177 | Hughes, Brian A (1518) | Lost 1-2 | -181479 |
| 3legacy | 242 | Colina, Carlos D (1498) | Lost 0-2 | -181461 |
| 4legacy | 302 | Morehouse, Russell (1464) | Lost 1-2 | -181443 |
| top | average opponent: 1495record: 1-3 | new rating: 1443 | ||
| Grand Prix St. Louis 2006 (CSP limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 54 | Shimura, Ichirou (1828) | Lost 0-2 | -131512 |
| 5sealed | 59 | Mantey, Tyler (1639) | Lost 0-2 | -161496 |
| 6sealed | 79 | Wagner, Bob (1496) | Lost 0-2 | -181478 |
| top | average opponent: 1654record: 0-3 | new rating: 1478 | ||
| Grand Prix Detroit 2005 (BOK limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 57 | Postlethwait, William (1598) | Lost 0-2 | -161517 |
| 5sealed | 83 | Vienneau, Matthew (1699) | Won 2-0 | +211538 |
| 6sealed | 23 | Parker, Mike (1554) | Won 2-0 | +181556 |
| 7sealed | 27 | Fabiano, Gerard (1884) | Won 2-1 | +241580 |
| 8sealed | 9 | Szleifer, Gadiel (1829) | Lost 0-2 | -141566 |
| 9draft | 11 | Breider, Aaron (1737) | Lost 0-2 | -151551 |
| 10draft | 30 | De Rosa, Antonino (1770) | Lost 0-2 | -141537 |
| 11draft | 9 | Fabiano, Gerard (1830) | Lost 0-2 | -121525 |
| 12draft | 13 | Norris, James (1492) | Lost 1-2 | -191506 |
| 14draft | 18 | Ruffin, Byron (1542) | Won 2-0 | +191525 |
| top | average opponent: 1694record: 4-6 | new rating: 1525 | ||
| Grand Prix Columbus 2004 (DST limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 56 | Prosak, Doug (1500) | Lost 0-2 | -181481 |
| 2sealed | 326 | Robek, Bryan (1465) | Won 2-0 | +181499 |
| 3sealed | 157 | Teasley, Nathan (1502) | Won 2-1 | +181517 |
| 4sealed | 202 | Wienburg, Ben (1544) | Lost 1-2 | -171500 |
| 5sealed | 205 | Nolan, Marc (1425) | Won 2-0 | +161516 |
| 6sealed | 195 | van Sickle, Joseph (1472) | Won 2-1 | +171533 |
| top | average opponent: 1485record: 4-2 | new rating: 1533 | ||
| Grand Prix Detroit 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 16 | Richard, Elise (1500) | Won 2-0 | +181518 |
| 2block | 12 | Morlan, Josh (1516) | Won 2-0 | +181536 |
| 3block | 39 | Levine, Andrew (1522) | Lost 0-2 | -181518 |
| 4block | 150 | Cullum, Travis (1494) | Lost 1-2 | -191499 |
| top | average opponent: 1508record: 2-2 | new rating: 1499 | ||