Chapman, Michael
Current rating: 1544
Record: 20-19
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 355 | Rodriguez, Christopher (1319) | Lost 0-2 | -221525 |
| 2modern | 338 | Crump, Jonathan (1482) | Won 2-1 | +171542 |
| 3modern | 350 | Stubblefield, Chad (1538) | Lost 0-2 | -181524 |
| 4modern | 515 | Foster, Landon (1451) | Won 2-1 | +161540 |
| 5modern | 262 | Alfaro, Juan (1496) | Won 2-1 | +181558 |
| 6modern | 317 | Wolbers, Andrew (1694) | Lost 0-2 | -161542 |
| 7modern | 323 | Wang, Anthony (1553) | Won 2-1 | +181560 |
| 8modern | 242 | Bresett, John (1683) | Lost 1-2 | -161544 |
| top | average opponent: 1527record: 4-4 | new rating: 1544 | ||
| Grand Prix Portland 2018 (modern) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 458 | Barnum, James (1569) | Lost 1-2 | -181563 |
| 2modern | 620 | Sukeforth, Jordan (1481) | Lost 0-2 | -201543 |
| 3modern | 812 | Mancia, Anthony (1464) | Won 2-0 | +171560 |
| 4modern | 694 | Wilson, Andy (1819) | Lost 0-2 | -131547 |
| top | average opponent: 1583record: 1-3 | new rating: 1547 | ||
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 328 | Humphreys, Cody (1500) | Won 2-1 | +171589 |
| 2modern | 158 | Day, Jaxon (1728) | Lost 1-2 | -161573 |
| 3modern | 333 | Koehn, Jacob (1501) | Won 2-0 | +171590 |
| 4modern | 323 | Pieper, Jeff (1498) | Lost 1-2 | -201570 |
| 5modern | 290 | Simons, Jeffrey (1501) | Won 2-1 | +171587 |
| 6modern | 300 | Malmstrom, Robert (1530) | Lost 1-2 | -191568 |
| 7modern | 310 | Cain, Lewis (1478) | Won 2-1 | +161584 |
| 8modern | 351 | Carr, Jim (1512) | Lost 1-2 | -191565 |
| 9modern | 309 | Armstrong, Brandon (1460) | Won 2-0 | +161581 |
| top | average opponent: 1523record: 5-4 | new rating: 1581 | ||
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Smith, Matt (1470) | Won 2-1 | +181494 |
| 2sealed | 137 | Turek, Leslie (1519) | Lost 1-2 | -181476 |
| 3sealed | 196 | Ashman, Benji (1501) | Won 2-1 | +181494 |
| 4sealed | 130 | Johnston, Bill (1517) | Won 2-0 | +191513 |
| 5sealed | 52 | Duncker, Conrad (1549) | Won 2-1 | +191532 |
| 6sealed | 83 | Williams, David A (1749) | Lost 1-2 | -151517 |
| 7sealed | 19 | Christensen, Jordan (1592) | Won 2-0 | +201537 |
| 8sealed | 17 | Bregoli, Mike (1672) | Won 2-1 | +201557 |
| 9sealed | 17 | Mowshowitz, Zvi (2017) | ID | 01557 |
| 10draft | 15 | Vienneau, Matthew (1718) | Lost 1-2 | -151542 |
| 11draft | 1 | Rodriguez, Erik (1564) | Won 2-1 | +191561 |
| 12draft | 13 | Burn, Seth (1639) | Lost 0-2 | -171544 |
| 13draft | 24 | Laroche, Francois (1654) | Won 2-0 | +201564 |
| 14draft | 19 | Vienneau, Matthew (1715) | Won 2-0 | +211585 |
| 15draft | 10 | Crosby, Joseph (1888) | Lost 1-2 | -131572 |
| top | average opponent: 1651record: 9-5-1 | new rating: 1572 | ||
| Grand Prix Boston 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 55 | Kesselman, Eric (1689) | Lost 1-2 | -151485 |
| 5sealed | 84 | Charlish, Danny (1521) | Lost 0-2 | -171468 |
| 7sealed | 76 | Mondragon, Daniel (1642) | Won 2-1 | +211489 |
| 8sealed | 44 | Hron, Mike (1739) | Lost 0-2 | -131476 |
| top | average opponent: 1648record: 1-3 | new rating: 1476 | ||