Mason, Thomas
Current rating: 1381
Record: 15-25-1
| Regional Championships Naples 2023 (ONE standard) | starting rating: 1369 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 106 | Potts, Dom (1551) | Won 2-1 | +211390 |
| 2standard | 68 | Lippi, Alessandro (1814) | Lost 0-2 | -111379 |
| 3standard | 75 | Szulborski, Michal (1552) | Lost 0-2 | -141365 |
| 4standard | 133 | Chouza, Ander (1487) | Won 2-1 | +201385 |
| 5standard | 109 | Etxebarria, Aritz (1487) | Lost 0-2 | -161369 |
| 6standard | 126 | Marinelli, Matteo (1573) | Won 2-0 | +211390 |
| 7standard | 123 | Szmatana, Patrik (1907) | Lost 0-2 | -91381 |
| top | average opponent: 1624record: 3-4 | new rating: 1381 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 359 | Baker, Matthew (1429) | Lost 0-2 | -191416 |
| 2legacy | 461 | Anderson, Isaac (1464) | Lost 1-2 | -171399 |
| 3legacy | 699 | Slover, Nate (1463) | Lost 1-2 | -171382 |
| 4legacy | 753 | Brauner, Daniel (1382) | Won 2-0 | +181400 |
| 5legacy | 669 | Evans, Mark (1581) | Lost 1-2 | -141386 |
| 6legacy | 598 | Guo, Michelle (1295) | Won 2-0 | +161402 |
| 7legacy | 475 | Nguyen, Lee Hung (1553) | Lost 0-2 | -151387 |
| 8legacy | 398 | Tetreault, Gregory (1392) | Lost 0-2 | -181369 |
| top | average opponent: 1445record: 2-6 | new rating: 1369 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1441 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Ferrell, Joseph (1506) | Won 2-0 | +191460 |
| 2sealed | 430 | Pina, Alexander (1517) | Won 2-1 | +191479 |
| 3sealed | 293 | Vandiver, Derek (1466) | Lost 0-2 | -181461 |
| 4sealed | 621 | McGraw, Matthew (1520) | Lost 1-2 | -171444 |
| 5sealed | 483 | Smith, Donald (1945) | Lost 0-2 | -91435 |
| top | average opponent: 1591record: 2-3 | new rating: 1435 | ||
| Grand Prix Seattle-Tacoma 2015 (legacy) | starting rating: 1429 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 72 | White, Peter (1590) | Lost 0-2 | -151414 |
| 4legacy | 294 | Elvigan, Jeff (1519) | Won 2-1 | +201434 |
| 5legacy | 146 | Hargreaves, Jason (1574) | Draw 0-0 | +31437 |
| 6legacy | 267 | Chen, Shawn (1505) | Won 2-0 | +191456 |
| 7legacy | 162 | Parker, Matthew 638 (1638) | Lost 1-2 | -151441 |
| top | average opponent: 1565record: 2-2-1 | new rating: 1441 | ||
| Grand Prix Charleston 2012 (RTR standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 156 | Archibeque, Alvin A (1500) | Lost 0-0 | -171465 |
| 2standard | 176 | Skerritt, Marc (1482) | Lost 0-1 | -181447 |
| 3standard | 276 | Formyduval, Gabe (1430) | Won 2-0 | +181465 |
| 4standard | 269 | Gniadek, John (1497) | Lost 0-2 | -181447 |
| 5standard | 263 | Harwell, Barney (1467) | Won 2-1 | +181465 |
| 6standard | 225 | Clark, Blake (1481) | Lost 0-2 | -171448 |
| 7standard | 202 | Yelton, John W (1415) | Lost 0-2 | -191429 |
| top | average opponent: 1467record: 2-5 | new rating: 1429 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 174 | Lohman, Martin D (1652) | Lost 0-2 | -151485 |
| 2legacy | 188 | Obrien, David (1482) | Lost 1-2 | -181467 |
| 3legacy | 235 | Ellis, Andy T (1411) | Won 2-1 | +171484 |
| 4legacy | 223 | Ocampo, Christopher (1485) | Lost 1-2 | -181466 |
| 5legacy | 245 | Varas, John (1464) | Won 2-1 | +181484 |
| 6legacy | 192 | Simoneau, Danny R (1479) | Won 2-1 | +181502 |
| 7legacy | 148 | Magararu, Juris (1508) | Won 2-1 | +181520 |
| 8legacy | 105 | Wickersham, Ray A (1467) | Lost 1-2 | -191501 |
| 9legacy | 98 | Keefer, Matt (1471) | Lost 0-2 | -191482 |
| top | average opponent: 1491record: 4-5 | new rating: 1482 | ||