Mastromatteo, Jason
Current rating: 1474
Record: 5-7
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 316 | Lazar, Anthony (1381) | Won 2-0 | +171464 |
| 2sealed | 449 | Batarseh, Sammy (1918) | Lost 1-2 | -101454 |
| 3sealed | 112 | Cade, Chris (1514) | Won 2-0 | +191473 |
| 4sealed | 593 | Verdugo, Maxcel (1522) | Won 2-0 | +191492 |
| 5sealed | 463 | Munroe, Chris (1492) | Lost 1-2 | -181474 |
| 6sealed | 480 | Romine, Alexander (1529) | Won 2-1 | +191493 |
| 7sealed | 294 | Gray, Jeremy (1458) | Won 2-0 | +171510 |
| 8sealed | 298 | Stevenson, Craig (1496) | Lost 0-2 | -181492 |
| 9sealed | 2128 | Eckman, Isaiah (1515) | Lost 0-2 | -181474 |
| average opponent: 1536record: 5-4 | new rating: 1474 | |||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1053 | Hyde, Landry (1549) | Lost 1-2 | -171483 |
| 2sealed | 1318 | Morley II, Timothy (1481) | Lost 0-2 | -181465 |
| 3sealed | 1361 | Brown, Steven (1477) | Lost 0-2 | -181447 |
| average opponent: 1502record: 0-3 | new rating: 1447 | |||