O'Brien, Dusty
Current rating: 1460
Record: 1-3
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 443 | Brown, David L (1500) | Lost 1-2 | -181482 |
| 2standard | 461 | Pappas, Jonathan (1484) | Won 2-0 | +181500 |
| 3standard | 310 | Katz, Aaron (1326) | Lost 1-2 | -211479 |
| 4standard | 562 | Gerbic, James (1440) | Lost 0-2 | -191460 |
| average opponent: 1437record: 1-3 | new rating: 1460 | |||