Duncan, Michael
Current rating: 1467
Record: 1-3
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 182 | Sargent, Shane C (1500) | Lost 1-2 | -181482 |
| 2sealed | 218 | Bhushan, Ambika (1482) | Won 2-0 | +181500 |
| 3sealed | 281 | Serignese, Paul (1599) | Lost 0-2 | -161484 |
| 4sealed | 266 | Connor, Andrew (1549) | Lost 1-2 | -171467 |
| average opponent: 1532record: 1-3 | new rating: 1467 | |||