Rock, Douglas
Current rating: 1465
Record: 2-4
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 452 | Thiry, Zane (1500) | Won 2-1 | +181518 |
| 2sealed | 364 | Wijsman, Gerwin (1580) | Lost 0-2 | -171501 |
| 3sealed | 578 | Epple, Stephen (1498) | Lost 0-2 | -181483 |
| 4sealed | 586 | Turk, Neil (1485) | Won 2-0 | +181501 |
| 5sealed | 553 | Owens, Josh (1485) | Lost 0-2 | -181483 |
| 6sealed | 473 | Dean, Charles (1483) | Lost 0-2 | -181465 |
| average opponent: 1505record: 2-4 | new rating: 1465 | |||