Sondag, Joshua
Current rating: 1491
Record: 17-21
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 3 | Zuccarini, Kyle (1500) | Won 2-0 | +181484 |
| 2standard | 150 | Fuentes, Oscar (1481) | Lost 0-2 | -181466 |
| 3standard | 343 | Golem, Zachary (1500) | Won 2-0 | +191485 |
| 4standard | 251 | Smith, Adam (1323) | Lost 0-2 | -211464 |
| 5standard | 334 | Maddalena, Todd (1461) | Won 2-0 | +181482 |
| 6standard | 292 | Santos, Jesse (1509) | Won 2-1 | +181500 |
| 7standard | 175 | Cuvelier, John (1995) | Lost 0-2 | -91491 |
| top | average opponent: 1538record: 4-3 | new rating: 1491 | ||
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 727 | Bujorian, Andrew (1500) | Won 2-0 | +191485 |
| 4sealed | 669 | Yu, Jarvis (2002) | Lost 0-2 | -101475 |
| 5sealed | 820 | Hall, Nicholas (1516) | Lost 1-2 | -171458 |
| 6sealed | 758 | LaFalce, Nicholas (1515) | Won 2-0 | +191477 |
| 7sealed | 794 | Mabie, Craig (1734) | Lost 0-2 | -131464 |
| 8sealed | 769 | Uland, Harley (1522) | Won 2-0 | +191483 |
| 9sealed | 779 | Timmerman, Robert (1542) | Lost 1-2 | -171466 |
| top | average opponent: 1619record: 3-4 | new rating: 1466 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 541 | Cusick, Brian (1708) | Won 2-1 | +221456 |
| 3sealed | 836 | Silberman, Philip (1887) | Won 2-1 | +261482 |
| 4sealed | 571 | Fang, Percy (1963) | Lost 0-2 | -101472 |
| 5sealed | 720 | Denison, Chesleigh (1539) | Won 2-0 | +191491 |
| 6sealed | 678 | Elenbogen, Andrew (1875) | Lost 0-2 | -111480 |
| 7sealed | 817 | Pernankil, Avenash (1593) | Lost 1-2 | -161464 |
| 8sealed | 782 | Dedrick, John (1576) | Won 2-1 | +201484 |
| 9sealed | 755 | Lankford, Cason (1488) | Lost 1-2 | -181466 |
| top | average opponent: 1704record: 4-4 | new rating: 1466 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 51 | Cantelmo, Alex (1518) | Lost 0-2 | -171448 |
| 3sealed | 767 | Johnson, Vincent (1633) | Lost 0-2 | -151433 |
| 4sealed | 848 | Frederick, Jared (1482) | Won 2-1 | +191452 |
| 5sealed | 615 | Romero, Michael (1421) | Lost 1-2 | -181434 |
| top | average opponent: 1513record: 1-3 | new rating: 1434 | ||
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 213 | Smigielski, AJ (1470) | Lost 0-2 | -191504 |
| 3standard | 537 | Goosby, James (1500) | Lost 1-2 | -181486 |
| 4standard | 473 | Ashby, Andrew (1446) | Won 2-0 | +171503 |
| 5standard | 478 | Keller, Michael (1393) | Lost 0-2 | -201483 |
| 6standard | 404 | Buelvas, Kai (1480) | Lost 1-2 | -181465 |
| top | average opponent: 1458record: 1-4 | new rating: 1465 | ||
| Grand Prix Orlando 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 123 | Sweet, Jonathan (1522) | Lost 1-2 | -181482 |
| 4sealed | 206 | Scaffidi, Brian (1518) | Won 2-1 | +191501 |
| 5sealed | 209 | Sgro, Stephen (1542) | Lost 0-2 | -171484 |
| 6sealed | 229 | Roush, Jacob (1471) | Won 2-1 | +181502 |
| 7sealed | 132 | Cook, Dillon (1538) | Lost 0-2 | -181484 |
| 8sealed | 164 | White, Justin (1654) | Won 2-1 | +211505 |
| 9sealed | 119 | Emery, Darrin (1474) | Won 2-1 | +181523 |
| top | average opponent: 1531record: 4-3 | new rating: 1523 | ||