Obrien, David
Current rating: 1527
Record: 5-4
| Grand Prix Providence 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 37 | Brooks, Daniel (1491) | Lost 1-2 | -181482 |
| 2legacy | 188 | Mason, Thomas (1485) | Won 2-1 | +181500 |
| 3legacy | 115 | O'Hara, Daniel (1545) | Won 2-0 | +191519 |
| 4legacy | 101 | Nielsen, Bill (1640) | Won 2-0 | +201539 |
| 5legacy | 95 | Coval, Brian (1500) | Won 2-0 | +171556 |
| 6legacy | 38 | Sperling, Matthew (1853) | Lost 0-2 | -131543 |
| 7legacy | 77 | Rist, Brandon (1541) | Lost 1-2 | -181525 |
| 8legacy | 114 | Grudzina, John (1552) | Won 2-0 | +191544 |
| 9legacy | 72 | Jones, Travis (1589) | Lost 0-2 | -171527 |
| average opponent: 1577record: 5-4 | new rating: 1527 | |||