Coyan, David F
Current rating: 1486
Record: 5-6-2
| Grand Prix Columbus 2012 (modern) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 241 | Hubbard, Justin (1500) | Lost 1-2 | -191505 |
| 2modern | 301 | Elliott, Kenneth (1482) | Won 2-1 | +181523 |
| 3modern | 217 | McCarter, Gillis (1500) | Lost 0-2 | -191504 |
| 4modern | 446 | Renner, Chris (1466) | Lost 1-2 | -181486 |
| average opponent: 1487record: 1-3 | new rating: 1486 | |||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 504 | Prokop, Mike J (1581) | Draw 1-1 | +11501 |
| 2legacy | 570 | Hawes, Brandon R (1500) | Lost 1-2 | -181483 |
| 3legacy | 640 | Sanders, David (1482) | Won 2-0 | +181501 |
| 4legacy | 608 | Baboussis, George (1464) | Lost 1-2 | -181483 |
| 5legacy | 641 | Vanderlooven, Doug (1482) | Won 2-1 | +181501 |
| 6legacy | 586 | Parke, Jamie (1766) | Lost 1-2 | -141487 |
| 7legacy | 562 | Fox, Terry L (1483) | Won 2-0 | +181505 |
| 8legacy | 514 | Mccloskey, Jordan S (1499) | Won 2-1 | +181523 |
| 9legacy | 484 | Hartzler, Adam B (1542) | Draw 1-1 | +11524 |
| average opponent: 1533record: 4-3-2 | new rating: 1524 | |||