Ewald, Gordon
Current rating: 1396
Record: 2-8-1
| Grand Prix Detroit 2016 (modern) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 158 | Bertoni III, Fiore (1500) | Won 2-0 | +191458 |
| 2modern | 424 | Osborne, Jacob (1501) | Draw 1-1 | +11459 |
| 3modern | 522 | Copeland, Samuel (1665) | Lost 1-2 | -141445 |
| 4modern | 770 | Manges, James (1610) | Lost 1-2 | -151430 |
| 5modern | 957 | Trager, Calvin (1480) | Lost 0-2 | -171413 |
| 6modern | 1008 | Wigent, Shawn (1482) | Lost 1-2 | -171396 |
| average opponent: 1540record: 1-4-1 | new rating: 1396 | |||
| Grand Prix Detroit 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 294 | Smith, Kris (1500) | Lost 0-2 | -181482 |
| 2modern | 521 | Houle, Sebastien (1236) | Lost 0-0 | -221460 |
| 3modern | 665 | Bruursema, Ben (1465) | Lost 0-2 | -181442 |
| 4modern | 681 | Warren, Chris (1425) | Won 2-0 | +171459 |
| 5modern | 616 | Gutierrez, Rob (1342) | Lost 1-2 | -201439 |
| average opponent: 1393record: 1-4 | new rating: 1439 | |||