Cook, Matt
Current rating: 1466
Record: 4-6
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 653 | Aycock, Heidi (1500) | Won 2-0 | +181482 |
| 2standard | 612 | Klein, Jeremy (1423) | Won 2-0 | +171499 |
| 3standard | 665 | Johnson, Bill A (1536) | Lost 0-2 | -171482 |
| 4standard | 805 | Krause, Megan (1500) | Won 2-0 | +181500 |
| 5standard | 748 | Stanfar, Michael (1553) | Lost 0-2 | -171483 |
| 6standard | 767 | Bogner, Ryan (1523) | Lost 0-2 | -171466 |
| average opponent: 1506record: 3-3 | new rating: 1466 | |||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 128 | Brown, Robert (1500) | Lost 1-2 | -181482 |
| 2extended | 317 | Francis, Chris (1482) | Won 2-0 | +181500 |
| 3extended | 197 | Grippa, Robert (1483) | Lost 0-2 | -181482 |
| 4extended | 348 | Xu, Jimmy (1483) | Lost 0-2 | -181464 |
| average opponent: 1487record: 1-3 | new rating: 1464 | |||