Matheis, Ashton
Current rating: 1597
Record: 15-12
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 1178 | Niko, Daniel (1536) | Won 2-1 | +191494 |
| 4modern | 57 | Horak, Nathan (1584) | Won 2-1 | +201514 |
| 5modern | 14 | Stevens, Kaleb (1554) | Won 2-0 | +191533 |
| 6modern | 29 | Wickham, Tyler (1525) | Lost 1-2 | -181515 |
| 7modern | 73 | Darvoudis, Demetre (1575) | Won 2-1 | +191534 |
| 8modern | 68 | Abel, Gary (1762) | Won 2-0 | +221556 |
| 9modern | 39 | Darras, Alexandre (1896) | Won 2-0 | +241580 |
| 10modern | 2007 | Zax, Aryeh (1891) | Won 2-1 | +231603 |
| 11modern | 2006 | Zhang, Jonathan (1755) | Won 2-1 | +211624 |
| 12modern | 2006 | Graham, Michael (1653) | Lost 1-2 | -171607 |
| 13modern | 2017 | Yoshida, Kei (1603) | Lost 0-2 | -181589 |
| 14modern | 2040 | Clark, Daniel (1867) | Lost 1-2 | -141575 |
| 15modern | 2036 | Pierce, Chuck (1787) | Won 2-0 | +221597 |
| top | average opponent: 1691record: 9-4 | new rating: 1597 | ||
| Grand Prix Orlando 2018 (M19 standard) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 157 | Anderson-Waite, Tristian (1500) | Won 2-0 | +181523 |
| 2standard | 154 | Connolly, James (1547) | Won 2-0 | +181541 |
| 3standard | 150 | Zhang, Bolun (1931) | Lost 1-2 | -111530 |
| 4standard | 219 | Rita, Edmund (1520) | Lost 0-2 | -181512 |
| 5standard | 325 | Anglero, Justin (1502) | Lost 1-2 | -181494 |
| 6standard | 316 | Batista, Dale (1483) | Lost 0-2 | -191475 |
| top | average opponent: 1581record: 2-4 | new rating: 1475 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 48 | Perez, Alexis (1500) | Won 2-0 | +181518 |
| 2modern | 147 | Simard, Mark (1569) | Lost 1-2 | -171501 |
| 3modern | 866 | Carrick, Emily (1548) | Lost 1-2 | -171484 |
| 4modern | 816 | Kim, Gregory (1338) | Won 2-1 | +151499 |
| 5modern | 549 | Sekulich, Ivan (1502) | Won 2-0 | +181517 |
| 6modern | 400 | Clark, Mason (1672) | Won 2-0 | +211538 |
| 7modern | 394 | Wagner, Travis (1669) | Lost 0-2 | -161522 |
| 8modern | 369 | Shultz, Lance (1544) | Lost 1-2 | -171505 |
| top | average opponent: 1543record: 4-4 | new rating: 1505 | ||