Clifton, Doug
Current rating: 1486
Record: 2-3
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 481 | Williams, Erik (1513) | Won 2-0 | +181518 |
| 2sealed | 33 | Janz, Carl (1623) | Lost 0-2 | -161502 |
| 3sealed | 248 | Penney, Joseph (1476) | Won 2-1 | +181520 |
| 4sealed | 225 | Mead, Forrest (1662) | Lost 1-2 | -161504 |
| 5sealed | 441 | Howell, Jack (1503) | Lost 1-2 | -181486 |
| average opponent: 1555record: 2-3 | new rating: 1486 | |||