Doyle, Nathan
Current rating: 1398
| Grand Prix Portland 2013 (modern) | starting rating: 1415 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 280 | Painter, Phillip (1500) | Lost 1-2 | -171398 |
| top | record: 0-1 | new rating: 1398 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 261 | Bennet, Jacob (1500) | Lost 0-2 | -181428 |
| 2sealed | 430 | Ewing, Quinton (1482) | Lost 1-2 | -171411 |
| 3sealed | 484 | Mallette, Anthony M (1467) | Won 2-0 | +191430 |
| 4sealed | 416 | Laughton, Don (1546) | Lost 1-2 | -151415 |
| top | average opponent: 1499record: 1-3 | new rating: 1415 | ||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Cook, Narayan (1472) | Lost 0-2 | -181482 |
| 2sealed | 591 | Palke, Darrel (1482) | Lost 0-2 | -181464 |
| 3sealed | 527 | Luke, David (1463) | Lost 0-2 | -181446 |
| top | average opponent: 1473record: 0-3 | new rating: 1446 | ||