Cox, Douglas
Current rating: 1561
| Grand Prix Detroit 2016 (modern) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 525 | O'Brien, Patrick (1525) | Lost 0-2 | -191542 |
| 3modern | 604 | Lyons, Tre (1437) | Lost 0-2 | -201522 |
| 4modern | 844 | Kemper, JT (1480) | Won 2-1 | +171539 |
| 5modern | 763 | Marincic, David (1498) | Won 2-0 | +181557 |
| 6modern | 549 | Barlament, Zachary (1559) | Won 2-0 | +181575 |
| 7modern | 495 | Green, Jeff (1843) | Won 2-1 | +221597 |
| 8modern | 190 | McLeskey, Kevin (1536) | Lost 0-2 | -191578 |
| 9modern | 333 | Yu, Jerome (1536) | Won 2-0 | +181596 |
| 10modern | 221 | Stickroe, Tim (1565) | Lost 0-2 | -191577 |
| 11modern | 307 | Hamel, Olivier (1759) | Lost 0-2 | -151562 |
| 12modern | 284 | Gallacher, Derek (1528) | Won 2-0 | +181580 |
| 13modern | 240 | Mitchell, Raymond (1529) | Lost 1-2 | -191561 |
| top | average opponent: 1566record: 6-6 | new rating: 1561 | ||
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 143 | Brickman, Justin (1500) | Won 2-0 | +181523 |
| 2standard | 105 | Woods, Robert (1521) | Won 2-1 | +181541 |
| 3standard | 55 | Levon, Sam (1536) | Lost 1-2 | -181523 |
| 4standard | 263 | Dowden, Drew (1518) | Won 2-0 | +181541 |
| 5standard | 82 | Wulf, Zachary (1539) | Won 0-0 | +181559 |
| 6standard | 51 | Petersen, Logan (1644) | Won 2-1 | +191578 |
| 7standard | 60 | Burnley, Abram (1604) | Lost 1-2 | -171561 |
| 8standard | 98 | McShane, Michael (1559) | Won 2-0 | +181579 |
| 9standard | 78 | Edelson, Ryan T (1584) | Lost 0-2 | -181561 |
| top | average opponent: 1556record: 6-3 | new rating: 1561 | ||
| Grand Prix Detroit 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 99 | Carroll, Jacob (1518) | Lost 0-0 | -181482 |
| 3modern | 507 | Ryan, Matthew (1557) | Won 2-1 | +201502 |
| 4modern | 330 | Kraska, Andrew (1471) | Lost 1-2 | -191483 |
| 5modern | 549 | McGill, Matt (1469) | Won 2-1 | +181501 |
| 6modern | 237 | Stenborg, Michael (1676) | Lost 1-2 | -151486 |
| 7modern | 346 | Figueroa, Eddie (1499) | Lost 0-0 | -181468 |
| 8modern | 337 | Booker, James (1491) | Won 2-0 | +191487 |
| 9modern | 282 | Levin-Pompetzki, Sean (1503) | Won 2-1 | +181505 |
| top | average opponent: 1523record: 4-4 | new rating: 1505 | ||