Stiefel, Robert
Current rating: 1465
Record: 3-5
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 603 | Anders, Christopher (1629) | Lost 0-2 | -161484 |
| 2modern | 873 | Wasil, Ryan (1484) | Lost 1-2 | -181466 |
| 3modern | 1215 | McGrath, John 7649 (1466) | Won 2-1 | +181484 |
| 4modern | 1050 | Sun, Richard (1538) | Won 2-1 | +191503 |
| 5modern | 578 | Wright, Joshua (1420) | Lost 0-2 | -191484 |
| 6modern | 788 | Payne, Sebastian (1481) | Won 2-1 | +181502 |
| 7modern | 703 | Smith, Brandon G (1483) | Lost 1-2 | -191483 |
| 8modern | 578 | Schulman, Mason (1485) | Lost 0-2 | -181465 |
| average opponent: 1498record: 3-5 | new rating: 1465 | |||