Cofield, Marcus
Current rating: 1436
Record: 5-9
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 325 | English, Christopher (1520) | Won 2-1 | +191481 |
| 2sealed | 130 | Dews, Aaron (1520) | Lost 0-2 | -171464 |
| 3sealed | 455 | Syverud, Paul (1518) | Won 2-1 | +191483 |
| 4sealed | 226 | McVety, Max (1910) | Lost 0-2 | -111472 |
| 5sealed | 416 | Bayog, Francis (1440) | Lost 0-1 | -191453 |
| 6sealed | 559 | Kemmey, Gray (1484) | Lost 0-2 | -171436 |
| average opponent: 1565record: 2-4 | new rating: 1436 | |||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 112 | WITEK, CURTIS L (1500) | Won 2-1 | +181518 |
| 2standard | 183 | HOOVER, JUSTIN (1500) | Lost 1-2 | -181500 |
| 3standard | 324 | Boyer, Charles (1500) | Lost 1-2 | -181482 |
| 4standard | 588 | Levine, Scott (1397) | Won 2-0 | +161498 |
| 5standard | 474 | wnuk, matthew J (1499) | Won 2-0 | +181516 |
| 6standard | 376 | Shuster, Justin (1538) | Lost 0-2 | -171499 |
| 7standard | 400 | Boutin, Nathaniel (1476) | Lost 0-2 | -191480 |
| 8standard | 358 | SCHILLING, KEVIN (1466) | Lost 0-2 | -181462 |
| average opponent: 1484record: 3-5 | new rating: 1462 | |||