Mathis, Deborah
Current rating: 1382
Record: 2-9-1
| Grand Prix Indianapolis 2017 (HOU limited) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 203 | Horne, William (1500) | Lost 1-2 | -161410 |
| 2sealed | 362 | Franklin, Eric (1580) | Won 2-0 | +211431 |
| 3sealed | 451 | McIntosh, John (1637) | Lost 1-2 | -151416 |
| 4sealed | 497 | Ackerman, Kyle (1465) | Lost 0-2 | -171399 |
| 5sealed | 480 | Desrochers, Joseph (1448) | Lost 1-2 | -171382 |
| average opponent: 1526record: 1-4 | new rating: 1382 | |||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 73 | Farina, James (1529) | Draw 1-1 | +11501 |
| 2sealed | 394 | Casarotto, Chad (1402) | Lost 0-2 | -201481 |
| 3sealed | 643 | Severson, Gordon (1464) | Won 2-0 | +171498 |
| 4sealed | 497 | McColley, Gregory (1483) | Lost 0-2 | -181480 |
| 5sealed | 1050 | Clausen, Joe (1489) | Lost 0-2 | -181462 |
| 6sealed | 496 | Schmidt, John (1465) | Lost 1-2 | -181444 |
| 7sealed | 392 | Woolley, Jennifer (1446) | Lost 0-2 | -181426 |
| average opponent: 1468record: 1-5-1 | new rating: 1426 | |||