McDonald, David
Current rating: 1427
Record: 0-4
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 799 | Ewing, Ethan (1500) | Lost 1-2 | -181482 |
| 2modern | 864 | Secules, Jeremy (1431) | Lost 1-2 | -191463 |
| 3modern | 1253 | Hartranft, John (1465) | Lost 0-2 | -181445 |
| 4modern | 1234 | Willmer, Troy (1448) | Lost 0-2 | -181427 |
| average opponent: 1461record: 0-4 | new rating: 1427 | |||