Cowall, Bill
Current rating: 1499
Record: 3-3
| Grand Prix Columbus 2010 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 403 | Coursey, Benjamin (1370) | Won 2-0 | +161516 |
| 2legacy | 503 | Hinojosa, Rolaund (1519) | Lost 1-2 | -181498 |
| 3legacy | 524 | Donaugh, Spencer R (1502) | Won 2-0 | +181516 |
| 4legacy | 502 | Huelsman, Norman (1527) | Lost 0-2 | -181498 |
| 5legacy | 599 | Farrer, Tom (1540) | Won 2-0 | +191517 |
| 6legacy | 546 | Ong, Wei Jian (1531) | Lost 0-2 | -181499 |
| average opponent: 1498record: 3-3 | new rating: 1499 | |||