Montecalvo, Derek
Current rating: 1426
Record: 1-5
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 200 | Horton, Nathaniel (1500) | Lost 0-2 | -181482 |
| 2sealed | 311 | Manly, Trevor (1482) | Lost 0-2 | -181464 |
| 3sealed | 318 | Castillo-Vergara, Franklyn (1463) | Lost 0-2 | -181446 |
| 4sealed | 327 | Dortman, Josh A (1446) | Won 2-1 | +181464 |
| 5sealed | 269 | McLaughlin, Charles (1386) | Lost 0-2 | -191445 |
| 6sealed | 227 | Wilson, Ryan (1431) | Lost 0-2 | -191426 |
| average opponent: 1451record: 1-5 | new rating: 1426 | |||