Blackwelder, Zachary
Current rating: 1464
Record: 1-3
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 233 | Douglas, Johnny (1500) | Lost 0-2 | -181482 |
| 2sealed | 621 | Blackburn, Samuel (1481) | Won 2-1 | +181500 |
| 3sealed | 808 | Hartsfield, Jason (1479) | Lost 0-2 | -181482 |
| 4sealed | 808 | Wilson, Brett (1482) | Lost 1-2 | -181464 |
| average opponent: 1486record: 1-3 | new rating: 1464 | |||