Blackburn, Joshua
Current rating: 1517
Record: 2-1-3
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 327 | Kaplan, David (1553) | Won 2-0 | +191519 |
| 2standard | 90 | Melillo, Mario (1525) | Draw 1-1 | 01519 |
| 3standard | 225 | Grove, Seth J (1517) | Won 2-1 | +181537 |
| 4standard | 213 | Rooks, Michael (1419) | Lost 0-2 | -201517 |
| 5standard | 326 | Smoot, Christopher (1536) | Draw 1-1 | 01517 |
| 6standard | 425 | Raupach, Donald B (1520) | Draw 1-1 | 01517 |
| average opponent: 1512record: 2-1-3 | new rating: 1517 | |||