Schoenfeld, David
Current rating: 1480
Record: 4-5
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 588 | Usman, Nick (1500) | Lost 0-2 | -181482 |
| 2sealed | 653 | Roth, Philippe (1469) | Won 2-1 | +181500 |
| 3sealed | 658 | Reed, Kevin (1500) | Lost 0-2 | -181482 |
| 4sealed | 691 | Morrill, Alex (1500) | Lost 0-2 | -181464 |
| 5sealed | 672 | Smelly, Robert (1464) | Won 2-0 | +181482 |
| 6sealed | 612 | Schoenbach, Daniel (1435) | Lost 1-2 | -191463 |
| 7sealed | 572 | Grimaldi, Ashley (1462) | Won 2-0 | +181481 |
| 8sealed | 526 | Reardon, Mike (1482) | Won 2-0 | +181499 |
| 9sealed | 486 | Petrock, Brandon (1420) | Lost 1-2 | -191480 |
| average opponent: 1470record: 4-5 | new rating: 1480 | |||