Stoltzfus, Nathan J
Current rating: 1485
Record: 5-6-1
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 618 | Crupi, Keith (1501) | Won 2-1 | +181500 |
| 2sealed | 537 | Lefevre, Charles (1549) | Lost 1-2 | -171483 |
| 3sealed | 671 | Sciore, Aaron (1500) | Won 2-1 | +181501 |
| 4sealed | 519 | Eykholt, Kevin (1517) | Lost 1-2 | -171484 |
| 5sealed | 599 | Wallhagen, Eric (1499) | Won 2-1 | +181502 |
| 6sealed | 542 | Legler, Tad (1536) | Lost 0-2 | -171485 |
| average opponent: 1517record: 3-3 | new rating: 1485 | |||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 225 | Taylor, Jay (1500) | Won 2-0 | +181518 |
| 2extended | 118 | Wilson, Gregg A (1500) | Lost 1-2 | -181500 |
| 3extended | 215 | Bauman, Michael (1499) | Won 2-1 | +181518 |
| 4extended | 213 | Montaruli, Michael D (1518) | Draw 1-1 | 01518 |
| 5extended | 221 | Dugard, Dave L (1523) | Lost 1-2 | -181500 |
| 6extended | 289 | Halverson, Erik (1502) | Lost 1-2 | -181482 |
| average opponent: 1507record: 2-3-1 | new rating: 1482 | |||