Thomas, Joseph
Current rating: 1487
Record: 17-20
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 83 | Castaneda, Gabriel (1511) | Won 2-1 | +191449 |
| 2sealed | 209 | Armstrong, Arthur (1479) | Won 2-0 | +191468 |
| 3sealed | 23 | Loveman, Eli (1940) | Lost 0-2 | -101458 |
| 4sealed | 338 | Morrison, Samuel (1562) | Lost 0-2 | -161442 |
| 5sealed | 359 | Pritsker, Jacob (1471) | Lost 1-2 | -181424 |
| 6sealed | 339 | Cunningham, Philip (1453) | Won 2-0 | +191443 |
| 7sealed | 279 | Carlton, Robert (1658) | Won 2-0 | +221465 |
| 8sealed | 207 | Maples, Zechariah (1706) | Won 2-1 | +221487 |
| top | average opponent: 1597record: 5-3 | new rating: 1487 | ||
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 271 | Coppinger, Clarence (1479) | Lost 1-2 | -171425 |
| 2modern | 514 | Moore, Matt (1432) | Won 2-0 | +181443 |
| 3modern | 468 | Berryman, Logan (1538) | Won 2-1 | +191462 |
| 4modern | 558 | Copeland, John (1488) | Won 2-1 | +191481 |
| 5modern | 316 | Baca, Dillon Matthew (1580) | Lost 1-2 | -161465 |
| 6modern | 417 | Thorlakson, Neil (1470) | Lost 0-2 | -181447 |
| 7modern | 588 | Rios, Jose 8196 (1496) | Lost 1-2 | -171430 |
| top | average opponent: 1498record: 3-4 | new rating: 1430 | ||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 269 | Giles, Clay (1464) | Won 2-1 | +191454 |
| 2modern | 3 | Jansen, Morgan (1536) | Lost 0-2 | -171437 |
| 3modern | 1036 | Bizzell, Isaiah (1627) | Lost 0-0 | -141423 |
| 4modern | 444 | Turner, Brandon (1380) | Won 2-0 | +171440 |
| 5modern | 446 | Cossey, Nick (1489) | Lost 1-2 | -171423 |
| 6modern | 424 | Parkhurst, Adam (1481) | Won 2-1 | +191442 |
| top | average opponent: 1496record: 3-3 | new rating: 1442 | ||
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 262 | Lentz, Jared (1500) | Lost 0-2 | -181452 |
| 3sealed | 489 | Watkins, Brady (1498) | Lost 0-2 | -171435 |
| top | average opponent: 1499record: 0-2 | new rating: 1435 | ||
| Grand Prix Kansas City 2013 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 51 | Van Osdel, Jordan (1500) | Won 2-1 | +181501 |
| 2modern | 189 | Kampfe, Andrew (1498) | Lost 1-2 | -181483 |
| 3modern | 306 | Tinsley, Kevin (1535) | Won 2-1 | +191502 |
| 4modern | 192 | Moriyama, Alex (1519) | Lost 1-2 | -171485 |
| 5modern | 303 | Blanchard, Wes (1441) | Lost 1-2 | -191466 |
| 6modern | 306 | Rogerson, Ian (1671) | Lost 1-2 | -151451 |
| 7modern | 287 | Buchanan, Drew (1464) | Won 2-0 | +191470 |
| 8modern | 238 | Briggs, Gregory (1485) | Won 2-0 | +181488 |
| 9modern | 163 | Marfisi, Sarah (1484) | Lost 1-2 | -181470 |
| top | average opponent: 1511record: 4-5 | new rating: 1470 | ||
| Grand Prix Kansas City 2011 (NPH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 79 | Wall, Nolan M (1518) | Lost 0-2 | -181482 |
| 3sealed | 254 | Hiatt, John A (1505) | Won 2-0 | +191501 |
| 4sealed | 240 | Stevens, Sage (1523) | Lost 1-2 | -181483 |
| 5sealed | 323 | Idoux, Drew J (1446) | Won 2-1 | +171500 |
| 6sealed | 189 | McClasky, Derek (1533) | Lost 1-2 | -171483 |
| top | average opponent: 1505record: 2-3 | new rating: 1483 | ||