Zeigler, Howard
Current rating: 1451
Record: 1-4
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 543 | Horvath, Nick (1481) | Won 2-1 | +181518 |
| 2modern | 573 | Tabler, Michael (1598) | Lost 0-2 | -171501 |
| 3modern | 919 | Petre, Evan (1761) | Lost 1-2 | -131488 |
| 4modern | 1063 | Bartelmo, Joseph (1451) | Lost 0-2 | -191469 |
| 5modern | 1063 | DeJohn, Chris (1464) | Lost 0-2 | -181451 |
| average opponent: 1551record: 1-4 | new rating: 1451 | |||