Mathis, David
Current rating: 1596
| Grand Prix Charlotte 2015 (modern) | starting rating: 1610 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 404 | Rudeseal, Adam (1478) | Won 2-0 | +161626 |
| 3modern | 341 | Schryver, Kyle (1501) | Lost 0-2 | -201606 |
| 4modern | 411 | Reel, Justin K (1524) | Won 2-1 | +161622 |
| 5modern | 273 | Hinckley, Scott A (1503) | Lost 0-2 | -201602 |
| 6modern | 410 | Harriger, John C (1520) | Won 2-0 | +171619 |
| 7modern | 296 | Shifflett, Brandon (1544) | Lost 1-2 | -201599 |
| 8modern | 354 | Parker, Zachariah (1519) | Won 2-0 | +171616 |
| 9modern | 306 | Lacomb, Corey (1528) | Lost 1-2 | -201596 |
| top | average opponent: 1515record: 4-4 | new rating: 1596 | ||
| Grand Prix Memphis 2015 (FRF standard) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 101 | Hooker, Tyler (1518) | Won 2-0 | +171584 |
| 3standard | 120 | Sudibjo, Alexander (1582) | Won 2-1 | +181602 |
| 4standard | 95 | Williams, Devin (1554) | Won 2-1 | +171619 |
| 5standard | 3 | Anetsberger, Ryan (1503) | Lost 0-2 | -201599 |
| 6standard | 47 | Yim, Chi Hoi (1768) | Won 2-0 | +211620 |
| 7standard | 39 | Vaughan, Robert (1659) | Won 2-0 | +191639 |
| 8standard | 37 | Wheeler, Jonathan (1633) | Lost 0-2 | -181621 |
| 9standard | 40 | Turtenwald, Owen (2064) | Lost 0-2 | -111610 |
| top | average opponent: 1660record: 5-3 | new rating: 1610 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 577 | Jackson, Chris (1502) | Won 2-0 | +181518 |
| 2sealed | 736 | Zwadlo, Josh (1510) | Won 2-1 | +181536 |
| 3sealed | 81 | Barrientos, Daniel (1534) | Won 2-1 | +181554 |
| 4sealed | 45 | Parson, Lukas (1814) | Lost 0-0 | -131541 |
| 5sealed | 172 | Hubbard, Keith (1520) | Won 2-1 | +171558 |
| 6sealed | 114 | Manary, Micah (1548) | Won 2-1 | +181576 |
| 7sealed | 62 | Oliver, Neal (1904) | Lost 0-2 | -121564 |
| 8sealed | 126 | Daley, Joshua (1578) | Won 2-0 | +181582 |
| 9sealed | 70 | Johnson, Jon (1759) | Lost 1-2 | -151567 |
| top | average opponent: 1630record: 6-3 | new rating: 1567 | ||