Mathias, James
Current rating: 1607
Record: 10-5
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 111 | Asteriou, John (1500) | Won 2-0 | +181518 |
| 2sealed | 138 | Collins, Andrew (1498) | Won 2-1 | +181536 |
| 3sealed | 113 | VanDinter, Nathan (1526) | Won 2-0 | +171553 |
| 4sealed | 64 | Stewart, Kyle (1557) | Lost 0-2 | -171536 |
| 5sealed | 45 | Brennan, Chris (1610) | Won 2-0 | +191555 |
| 6sealed | 79 | Chan, Jason (1863) | Lost 0-2 | -131542 |
| 7sealed | 77 | Lihoreau, Ibai (1823) | Won 2-1 | +231565 |
| 8sealed | 39 | Corte, Donald (1569) | Won 2-1 | +181583 |
| 9sealed | 55 | Warden, Justin (1739) | Won 2-1 | +211604 |
| 10draft | 26 | Hewitt, Jake (1616) | Won 2-1 | +181622 |
| 11draft | 10 | Hallock, Jeremy (1579) | Won 2-0 | +181640 |
| 12draft | 26 | Andejeski, Jason (1769) | Lost 1-2 | -161624 |
| 13draft | 37 | Elkins, Brandon (1602) | Lost 1-2 | -181606 |
| 14draft | 53 | Cialek, Wesley (1606) | Lost 1-2 | -181588 |
| 15draft | 6 | Schmidt, Tyler (1673) | Won 2-0 | +191607 |
| average opponent: 1635record: 10-5 | new rating: 1607 | |||