Knox, Joshua L
Current rating: 1570
Record: 13-9
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 583 | Jimmey, Michael (1500) | Won 2-0 | +181534 |
| 2sealed | 466 | Dettman, Rob (1470) | Won 2-0 | +171551 |
| 3sealed | 505 | Hsu, Mike (1544) | Won 2-0 | +181569 |
| 4sealed | 433 | Bard, Nicholas (1537) | Lost 0-2 | -191550 |
| 5sealed | 536 | Hostutler, Justin (1536) | Won 2-0 | +181568 |
| 6sealed | 494 | Piela, Benny (1520) | Lost 0-2 | -191549 |
| 7sealed | 548 | Eykholt, Kevin (1535) | Won 2-1 | +181567 |
| 8sealed | 499 | Hinkle, Charles (1754) | Won 2-0 | +211588 |
| 9sealed | 446 | Vigderman, Constantine (1710) | Won 2-0 | +201608 |
| 10draft | 36 | Wall, Ryan (1512) | Won 2-0 | +171625 |
| 11draft | 43 | Duterte, Daniel (1640) | Lost 0-2 | -181607 |
| 12draft | 73 | Costa, Matthew (1586) | Lost 0-2 | -181589 |
| 13draft | 28 | Hiles, Christopher (1564) | Lost 0-2 | -191570 |
| 14draft | 2 | Demander, Carl (1570) | Won 2-1 | +181588 |
| 15draft | 46 | Bond, Stephen (1587) | Lost 1-2 | -181570 |
| average opponent: 1571record: 9-6 | new rating: 1570 | |||
| Grand Prix Chicago 2009 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 141 | Creasey, Justin M (1500) | Lost 0-2 | -181482 |
| 2legacy | 405 | Williamson, David (1463) | Won 2-1 | +181500 |
| 3legacy | 248 | Marquardt, Robert (1501) | Lost 0-2 | -181482 |
| 4legacy | 502 | Mong, Derek (1390) | Won 2-0 | +161498 |
| 5legacy | 417 | Steadman, Pete J (1501) | Won 2-0 | +181516 |
| 6legacy | 197 | Clark, Dan (1463) | Won 2-1 | +171533 |
| 7legacy | 141 | Van Lunen, Jacob (1608) | Lost 0-1 | -171516 |
| average opponent: 1490record: 4-3 | new rating: 1516 | |||