Ewing, Mark
Current rating: 1382
| Regional Championships San Diego 2023 (ONE standard) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 106 | Mullen, Collins (1813) | Lost 1-2 | -121435 |
| 2standard | 318 | Peo, Joseph (1427) | Lost 1-2 | -181417 |
| 3standard | 457 | Cullinan, Kevin (1384) | Lost 1-2 | -191398 |
| 4standard | 445 | Clayton, Sam (1479) | Lost 1-2 | -161382 |
| top | average opponent: 1526record: 0-4 | new rating: 1382 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 516 | Caldwell, Devon (1500) | Lost 0-2 | -181462 |
| 2modern | 601 | Galasinao, Nicholas (1633) | Lost 1-2 | -151447 |
| 3modern | 616 | Aprim, Matthew (1413) | Won 2-0 | +171464 |
| 4modern | 598 | Bertelsen, Erik (1488) | Lost 0-2 | -171447 |
| top | average opponent: 1508record: 1-3 | new rating: 1447 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 185 | Clark, Cory (1500) | Won 2-0 | +181518 |
| 2modern | 142 | Snyder, Drew (1468) | Lost 0-2 | -191499 |
| 3modern | 502 | Ponting, Kory (1487) | Won 2-1 | +181517 |
| 4modern | 343 | Clark, Jared (1440) | Lost 1-2 | -201497 |
| 5modern | 396 | Mendolia, Joseph (1500) | Lost 1-2 | -171480 |
| top | average opponent: 1479record: 2-3 | new rating: 1480 | ||