Mattox, Jacob
Current rating: 1467
Record: 16-17-2
| Grand Prix Richmond 2014 (modern) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 501 | Bauman, Eric (1620) | Draw 1-1 | +21505 |
| 2modern | 402 | Bowen, Leonard (1458) | Draw 1-1 | -11504 |
| 3modern | 606 | Walker, Brian (1471) | Lost 1-2 | -191485 |
| 4modern | 666 | Cuttler, William (1484) | Lost 1-2 | -181467 |
| top | average opponent: 1508record: 0-2-2 | new rating: 1467 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 303 | Gray, Russell (1503) | Lost 0-2 | -181507 |
| 2sealed | 496 | Caldwell, Mike (1415) | Lost 0-2 | -201487 |
| 3sealed | 493 | Waller, Joe (1428) | Won 2-0 | +171504 |
| 4sealed | 461 | Weinstein, Zachary (1449) | Won 2-0 | +171521 |
| 5sealed | 87 | Ayalde, Francis (1480) | Lost 1-2 | -181503 |
| top | average opponent: 1455record: 2-3 | new rating: 1503 | ||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 384 | Sunu, Stephen (1500) | Won 2-1 | +181548 |
| 2sealed | 250 | Meade, Chauncey (1436) | Lost 1-2 | -201528 |
| 3sealed | 278 | Reed, Collin (1500) | Won 2-0 | +171545 |
| 4sealed | 238 | Kelso, Ian (1518) | Won 2-0 | +181563 |
| 5sealed | 192 | Trent, Michael D (1516) | Lost 1-2 | -191544 |
| 6sealed | 286 | Knapp, Daniel (1523) | Lost 0-2 | -191525 |
| top | average opponent: 1499record: 3-3 | new rating: 1525 | ||
| Grand Prix Charleston 2012 (RTR standard) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 169 | Glidewell, Larry R (1500) | Won 0-0 | +171571 |
| 2standard | 118 | Henry, Jeremy (1500) | Won 2-1 | +171588 |
| 3standard | 6 | Herrera, Joseph (1551) | Lost 0-2 | -191569 |
| 4standard | 185 | Platt, Michael (1479) | Lost 1-2 | -191550 |
| 5standard | 228 | Duval, Anthony (1468) | Lost 1-2 | -201530 |
| top | average opponent: 1500record: 2-3 | new rating: 1530 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 24 | Stryker, Fred (1463) | Lost 1-2 | -181484 |
| 2extended | 190 | Ohlson, Leighton (1482) | Lost 1-2 | -181466 |
| 3extended | 224 | Albright, Alex (1464) | Won 2-1 | +181484 |
| 4extended | 245 | Katz, Aaron (1481) | Won 2-1 | +181502 |
| 5extended | 201 | Barnes, Trek (1499) | Won 2-1 | +181520 |
| 6extended | 163 | Brickey, Christopher (1518) | Won 2-1 | +181538 |
| 7extended | 92 | Bakalar, Val (1519) | Won 2-0 | +171555 |
| 8extended | 83 | Suarez, Christopher (1558) | Won 2-1 | +181573 |
| 9extended | 38 | Magnan, Bronson (1521) | Lost 1-2 | -191554 |
| top | average opponent: 1501record: 6-3 | new rating: 1554 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 45 | Rax, Shawn (1500) | Won 2-0 | +181518 |
| 2sealed | 187 | Ledford, Travis (1501) | Won 2-1 | +181536 |
| 3sealed | 58 | Goldberg, Zachary (1536) | Won 2-0 | +181554 |
| 4sealed | 4 | Sprowls, Brandon (1680) | Lost 0-2 | -161538 |
| 5sealed | 58 | Hicks, Steven (1564) | Lost 0-2 | -181520 |
| 6sealed | 167 | Brickner, Alex (1521) | Lost 1-2 | -181502 |
| top | average opponent: 1550record: 3-3 | new rating: 1502 | ||