Cook, Joel
Current rating: 1483
Record: 2-3
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 733 | Liebrecht, Brian A (1465) | Lost 0-2 | -191481 |
| 2standard | 934 | Rhodes, Kristopher (1615) | Lost 1-2 | -151466 |
| 3standard | 1017 | Harrell, Travis (1464) | Won 2-0 | +181484 |
| 4standard | 976 | Brown, Mark (1430) | Won 2-0 | +171501 |
| 5standard | 899 | Petre, Allen (1500) | Lost 1-2 | -181483 |
| average opponent: 1495record: 2-3 | new rating: 1483 | |||