Mattson, Bill
Current rating: 1538
Record: 4-2-1
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 149 | Connelly, Christopher (1500) | Draw 1-1 | 01500 |
| 2sealed | 300 | Card, Garry (1448) | Won 2-1 | +171517 |
| 3sealed | 237 | Gurrola, Elliott (1518) | Lost 1-2 | -181499 |
| 4sealed | 353 | Salas, James (1498) | Won 2-0 | +181517 |
| 5sealed | 235 | Wong, Travis (1589) | Won 2-1 | +191536 |
| 6sealed | 151 | Dunn, Randy (1564) | Won 2-0 | +191555 |
| 7sealed | 84 | Chapman, Steven (1603) | Lost 1-2 | -171538 |
| average opponent: 1532record: 4-2-1 | new rating: 1538 | |||