McDonald, Brendan J
Current rating: 1464
Record: 1-3
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 6 | Forsberg, Donovan (1500) | Won 2-0 | +181518 |
| 2sealed | 204 | Mackey, Sam (1518) | Lost 0-2 | -181500 |
| 3sealed | 376 | Buck, Chris W (1499) | Lost 0-2 | -181482 |
| 4sealed | 502 | Ballesteros, Jay (1483) | Lost 0-2 | -181464 |
| average opponent: 1500record: 1-3 | new rating: 1464 | |||