Yarnall, Tim
Current rating: 1481
Record: 1-2-1
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 492 | Dahan, Evan (1500) | Draw 1-1 | 01500 |
| 2sealed | 598 | Morris, Wayne (1500) | Won 2-0 | +181518 |
| 3sealed | 527 | McNeill, Dan (1498) | Lost 0-2 | -181500 |
| 4sealed | 627 | Ogrydziak, Jon (1470) | Lost 0-2 | -191481 |
| average opponent: 1492record: 1-2-1 | new rating: 1481 | |||