Pruden, Devon
Current rating: 1352
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1392 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 448 | Zoellner, Mark (1500) | Won 2-1 | +201412 |
| 2sealed | 14 | Centauri, Eric (1810) | Lost 0-2 | -111401 |
| 3sealed | 597 | Gonzalez, Adrian [USA] (1490) | Lost 0-2 | -161385 |
| 4sealed | 663 | Wagner, Robert (1593) | Lost 1-2 | -141371 |
| 5sealed | 646 | Cardenas, Jason (1365) | Lost 0-2 | -191352 |
| top | average opponent: 1551record: 1-4 | new rating: 1352 | ||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 317 | Bailey, Charles T (1500) | Lost 1-2 | -181446 |
| 2sealed | 275 | Linares, Carlos (1465) | Lost 0-2 | -171429 |
| 3sealed | 370 | Ly, Edward (1460) | Lost 0-2 | -181411 |
| 4sealed | 407 | Martin, Robert (1365) | Lost 0-2 | -191392 |
| top | average opponent: 1448record: 0-4 | new rating: 1392 | ||
| Grand Prix Denver 2011 (MBS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 448 | Wise, Steve (1503) | Lost 0-2 | -181482 |
| 2sealed | 561 | Irwin, Russell (1455) | Lost 0-1 | -181464 |
| top | average opponent: 1479record: 0-2 | new rating: 1464 | ||