Cooper, Marshall E
Current rating: 1464
Record: 1-3
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 92 | Shield, Jeffrey (1500) | Lost 1-2 | -181482 |
| 2standard | 268 | Kress, Karl E (1482) | Lost 0-2 | -181464 |
| 3standard | 387 | Keller, Seef (1465) | Won 2-0 | +181482 |
| 4standard | 391 | Watson, Colin (1482) | Lost 0-2 | -181464 |
| average opponent: 1482record: 1-3 | new rating: 1464 | |||