Hefner, Jacob
Current rating: 1464
Record: 1-3
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 475 | Warrington, Troy (1481) | Lost 0-2 | -181482 |
| 2modern | 727 | Stewart, David (1482) | Lost 0-2 | -181464 |
| 3modern | 1204 | Helton, DJ (1462) | Won 2-1 | +181482 |
| 4modern | 923 | Winkler, Michael (1483) | Lost 0-2 | -181464 |
| average opponent: 1477record: 1-3 | new rating: 1464 | |||