Cumbie, Darren
Current rating: 1430
Record: 2-6
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 296 | Soowal, Nathan (1692) | Lost 0-1 | -151485 |
| 2modern | 370 | Geyer, Breton (1498) | Lost 0-2 | -171468 |
| 3modern | 707 | Cowley, Luke (1464) | Won 1-0 | +181486 |
| 4modern | 691 | Harkins, Cameron (1450) | Lost 1-2 | -191467 |
| 5modern | 651 | Wright, Paul (1467) | Lost 0-2 | -181449 |
| 6modern | 578 | Dorn, Evan (1455) | Lost 0-2 | -181431 |
| 7modern | 502 | Ard, John (1362) | Won 2-1 | +171448 |
| 8modern | 413 | Senig, Alex (1452) | Lost 1-2 | -181430 |
| average opponent: 1480record: 2-6 | new rating: 1430 | |||