Marshall, Brian C
Current rating: 1432
Record: 3-7
| Grand Prix Columbus 2010 (legacy) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 548 | Baker, Brian (1505) | Won 2-1 | +181502 |
| 2legacy | 530 | Barker, Zach (1564) | Lost 0-2 | -171485 |
| 3legacy | 614 | Bowman, Benjamin (1505) | Lost 1-2 | -181467 |
| 4legacy | 666 | Wang, Samuel (1464) | Lost 0-2 | -181449 |
| 5legacy | 642 | Reddinger, Thomas J (1482) | Lost 0-2 | -171432 |
| average opponent: 1504record: 1-4 | new rating: 1432 | |||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 668 | Ralsten, Rick (1508) | Lost 0-2 | -181482 |
| 2standard | 1009 | Montgomery, Christopher (1482) | Won 2-1 | +181500 |
| 3standard | 878 | Wong, Ben (1525) | Won 2-1 | +191519 |
| 4standard | 787 | Wetzel, Aaron (1576) | Lost 0-2 | -171502 |
| 5standard | 900 | Hartbarger, Lance (1500) | Lost 0-2 | -181484 |
| average opponent: 1518record: 2-3 | new rating: 1484 | |||