Williams, Jason
Current rating: 1558
Record: 19-16-2
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 728 | Hamelin, Tyler (1500) | Lost 1-2 | -201578 |
| 2sealed | 773 | Isenberg, Sam (1466) | Lost 1-2 | -201558 |
| top | average opponent: 1483record: 0-2 | new rating: 1558 | ||
| Grand Prix Memphis 2015 (FRF standard) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 72 | Young, Griffin (1399) | Won 2-1 | +151587 |
| 2standard | 72 | Martin, Steven (1561) | Lost 0-2 | -191568 |
| 3standard | 72 | Cantrell, Alexander (1500) | Won 2-0 | +171585 |
| 4standard | 72 | Vaughan, Robert (1607) | Lost 0-2 | -171568 |
| 5standard | 72 | Gould, Rayne (1448) | Won 2-1 | +151583 |
| 6standard | 72 | Barrett, Ethan (1548) | Won 2-0 | +181601 |
| 7standard | 72 | Smith, Christina (1593) | Won 2-1 | +181619 |
| 8standard | 72 | McKay, Brent (1540) | Lost 1-2 | -201599 |
| 9standard | 72 | Bench, Austin (1526) | Draw 1-1 | -11598 |
| top | average opponent: 1525record: 5-3-1 | new rating: 1598 | ||
| Grand Prix Louisville 2013 (THS standard) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 166 | Holliday, Ryan (1510) | Won 2-0 | +171541 |
| 3standard | 164 | Humphreys, Josh (1518) | Won 2-1 | +181559 |
| 4standard | 195 | Kinkade, Eben (1575) | Lost 0-2 | -181541 |
| 5standard | 321 | Snyder, Drew (1555) | Won 2-0 | +191560 |
| 6standard | 151 | Castor, Kenny (1923) | Won 2-1 | +241584 |
| 7standard | 150 | Parson, Justin (1598) | Won 2-1 | +181602 |
| 8standard | 132 | Anderson, Todd (1867) | Lost 0-2 | -131589 |
| 9standard | 201 | Williamson, Scott (1340) | Won 2-0 | +131602 |
| 10standard | 63 | Guy, Matthew (1624) | Won 2-0 | +191621 |
| 11standard | 37 | Morrison, Mark (1727) | Lost 0-2 | -161605 |
| 12standard | 35 | Kingsley, James W (1638) | Won 2-0 | +181623 |
| 13standard | 30 | Barr, Alex (1607) | Lost 0-2 | -181605 |
| 14standard | 39 | Tidd, David (1711) | Lost 1-2 | -161589 |
| 15standard | 43 | Johnson-Epstein, Jasper (1644) | Lost 0-2 | -171572 |
| top | average opponent: 1631record: 8-6 | new rating: 1572 | ||
| Grand Prix Milwaukee 2002 (TOR standard) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 17 | Rodemann, Dan (1471) | Lost 0-2 | -181483 |
| 5standard | 77 | Baumann, Kurtis (1586) | Won 2-1 | +201503 |
| 6standard | 54 | Hlaj, John (1555) | Lost 0-2 | -171486 |
| 7standard | 79 | Procunier, Doug (1556) | Won 2-0 | +191505 |
| 8standard | 56 | Hans, Jeff (1539) | Won 2-0 | +191524 |
| top | average opponent: 1542record: 3-2 | new rating: 1524 | ||
| Grand Prix Atlanta 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 53 | Taint, Russell (1481) | Lost 1-2 | -181482 |
| 2sealed | 100 | Bailey, Jason (1482) | Lost 0-1 | -181464 |
| 3sealed | 146 | Bartlett, Jerry (1463) | Won 2-0 | +181482 |
| 4sealed | 144 | Hancock, Emerson (1482) | Won 2-0 | +181500 |
| 5sealed | 115 | Reeves, Brad (1518) | Draw 1-1 | 01500 |
| 6sealed | 107 | Nugent, Stephen (1482) | Won 2-0 | +181518 |
| 7sealed | 77 | Mayo, Frank (1618) | Lost 0-2 | -171501 |
| top | average opponent: 1504record: 3-3-1 | new rating: 1501 | ||