O'Brien, Elliott
Current rating: 1477
Record: 3-4
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 342 | Marshall, Chris (1482) | Lost 0-2 | -181482 |
| 2standard | 488 | Scott, Richard (1410) | Won 2-1 | +161498 |
| 3standard | 392 | Jones, Nathan (1482) | Won 2-1 | +181516 |
| 4standard | 352 | Rae, Daniel M [USA] (1464) | Won 2-0 | +171533 |
| 5standard | 273 | Echavarria, Carlos (1399) | Lost 0-2 | -201513 |
| 6standard | 403 | March, Joey (1539) | Lost 1-2 | -181495 |
| 7standard | 341 | Akers, Jay (1499) | Lost 0-2 | -181477 |
| average opponent: 1468record: 3-4 | new rating: 1477 | |||