Walton, David
Current rating: 1463
Record: 1-3
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 565 | Uttaro, Welkin (1500) | Lost 1-2 | -181482 |
| 2sealed | 619 | Dorsey, Brooks (1500) | Lost 1-2 | -181464 |
| 3sealed | 724 | Jackson, Raymond (1463) | Won 2-0 | +181482 |
| 4sealed | 678 | Zhang, Stephen (1438) | Lost 0-2 | -191463 |
| average opponent: 1475record: 1-3 | new rating: 1463 | |||