Piekut, Zach
Current rating: 1392
Record: 1-7
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 272 | Hersch, Max (1541) | Lost 0-2 | -171483 |
| 2modern | 1031 | Tipton, David (1484) | Lost 0-2 | -181465 |
| 3modern | 1235 | Murar, Brian (1464) | Lost 0-2 | -181447 |
| 4modern | 1209 | Reichard, Ben (1451) | Lost 1-2 | -181429 |
| 5modern | 1147 | Kubiak, Eddie (1427) | Won 2-0 | +181447 |
| 6modern | 971 | Cunningham, Samuel (1447) | Lost 1-2 | -181429 |
| 7modern | 793 | Wisniewski, Mark (1427) | Lost 0-2 | -181411 |
| 8modern | 624 | Ludolph, Dustin (1371) | Lost 0-2 | -191392 |
| average opponent: 1451record: 1-7 | new rating: 1392 | |||