Tummons, Matt R
Current rating: 1468
Record: 5-7
| Grand Prix Nashville 2012 (DKA limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 119 | Castillo, Marc (1482) | Won 2-1 | +181501 |
| 3sealed | 35 | Decker, Mike (1500) | Lost 0-2 | -181483 |
| 4sealed | 247 | Sutcliffe, Jeremy (1502) | Won 2-0 | +191502 |
| 5sealed | 229 | Walker, Eddie (1502) | Won 2-0 | +181520 |
| 6sealed | 148 | Flint, Alec C (1542) | Lost 1-2 | -181502 |
| 7sealed | 146 | Koepke, Devin (1611) | Lost 1-2 | -161486 |
| 8sealed | 196 | Sondag, Brian (1506) | Lost 1-2 | -181468 |
| average opponent: 1521record: 3-4 | new rating: 1468 | |||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 418 | Kopf, Joe W (1501) | Won 2-1 | +181518 |
| 2sealed | 556 | Wolfe, Brandt (1595) | Lost 0-2 | -171501 |
| 3sealed | 643 | Trumbull, Philip (1498) | Lost 0-2 | -181483 |
| 4sealed | 650 | Romine, Robert (1482) | Won 2-1 | +181501 |
| 5sealed | 599 | Choudhury, Soumitra (1502) | Lost 0-2 | -181483 |
| average opponent: 1516record: 2-3 | new rating: 1483 | |||