Brett, Robert F
Current rating: 1499
Record: 4-4
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 107 | Peters, Stephen (1500) | Lost 0-2 | -181482 |
| 2sealed | 291 | Wojnarski, Ryan (1480) | Won 2-0 | +181500 |
| 3sealed | 251 | Gareau, Adrian (1482) | Won 2-1 | +181518 |
| 4sealed | 123 | Cammilleri, Mike (1502) | Lost 0-2 | -191499 |
| 5sealed | 244 | Clark, Michael N (1530) | Won 2-1 | +191518 |
| 6sealed | 162 | Griffin, Blair (1498) | Won 2-1 | +181536 |
| 7sealed | 115 | Cooper, Ryan (1536) | Lost 1-2 | -181518 |
| 8sealed | 123 | Kheyfets, Greg (1499) | Lost 0-2 | -191499 |
| average opponent: 1503record: 4-4 | new rating: 1499 | |||