Hamel, Dave W
Current rating: 1507
Record: 2-2
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Markowitz, Jonathan (1500) | Won 2-0 | +181518 |
| 2sealed | 18 | Growke, Vince (1499) | Won 1-0 | +181536 |
| 3sealed | 19 | White, Jeremy (1687) | Lost 0-2 | -161520 |
| 4sealed | 181 | Majlaton, Alex (1752) | Lost 0-2 | -131507 |
| average opponent: 1609record: 2-2 | new rating: 1507 | |||