Cox, Charles G
Current rating: 1495
Record: 2-3
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 409 | Taulbee, Brad (1718) | Lost 0-2 | -141486 |
| 5sealed | 533 | Field, Shamus (1536) | Lost 1-2 | -171469 |
| 6sealed | 510 | Patel, Hemant (1481) | Won 2-0 | +181487 |
| 7sealed | 472 | Six, Brian (1744) | Won 2-1 | +231510 |
| 8sealed | 462 | Carleton-Barnes, Gabriel (1686) | Lost 1-2 | -151495 |
| average opponent: 1633record: 2-3 | new rating: 1495 | |||