Thomas, David K
Current rating: 1421
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 251 | Henderson, Bryce (1557) | Lost 1-2 | -161436 |
| 2sealed | 276 | Raines, Joseph (1515) | Lost 0-2 | -171419 |
| 3sealed | 460 | Ward, Geoff (1462) | Won 2-0 | +191438 |
| 4sealed | 434 | Solis, John (1486) | Lost 1-2 | -171421 |
| top | average opponent: 1505record: 1-3 | new rating: 1421 | ||
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 74 | Riley, Jacob (1464) | Won 2-1 | +191465 |
| 2sealed | 6 | Ibarra, AJ (1498) | Won 2-0 | +181483 |
| 3sealed | 126 | Bardier, Daniel (1703) | Lost 0-2 | -141469 |
| 4sealed | 218 | Tyson, Tony (1521) | Lost 0-2 | -171452 |
| 5sealed | 215 | Stallings, Sid (1499) | Won 2-1 | +191471 |
| 6sealed | 195 | Jones, Derek (1420) | Lost 1-2 | -191452 |
| top | average opponent: 1518record: 3-3 | new rating: 1452 | ||
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 91 | Dilley, Nathan (1555) | Lost 1-2 | -171483 |
| 2standard | 301 | Gaal, Dennis A (1482) | Lost 0-2 | -181465 |
| 3standard | 392 | Hicks, Justin (1431) | Lost 0-2 | -191446 |
| top | average opponent: 1489record: 0-3 | new rating: 1446 | ||