Maack, Bryan
Current rating: 1503
Record: 3-3
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 130 | Momen, Adham (1518) | Lost 1-2 | -181482 |
| 2sealed | 515 | Houghton, Robert (1482) | Won 2-0 | +181500 |
| 3sealed | 424 | Sullivan, Kyle (1483) | Won 2-0 | +181518 |
| 4sealed | 300 | Fruchtman, Kurt (1663) | Won 2-0 | +211539 |
| 5sealed | 138 | Harrington, Jaret (1535) | Lost 0-2 | -181521 |
| 6sealed | 195 | Wu, Alvan (1518) | Lost 0-2 | -181503 |
| average opponent: 1533record: 3-3 | new rating: 1503 | |||