Mack, Shawn A
Current rating: 1481
Record: 2-3
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 206 | White, Benjamin (1464) | Won 2-0 | +171517 |
| 2standard | 113 | Rubin, Jonathan (1500) | Won 2-0 | +181535 |
| 3standard | 40 | Machado, Kyle (1558) | Lost 1-2 | -181517 |
| 4standard | 188 | Dees, Davey (1518) | Lost 0-2 | -181499 |
| 5standard | 226 | Sauve, Ryan (1482) | Lost 1-2 | -181481 |
| average opponent: 1504record: 2-3 | new rating: 1481 | |||