O'Marrah, Stephen
Current rating: 1462
Record: 1-3
| Grand Prix Chicago 2014 (JOU standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 206 | Null, Gary (1500) | Won 2-1 | +181518 |
| 2standard | 35 | Puffer, Jon (1441) | Lost 1-2 | -191499 |
| 3standard | 253 | Rice, Jason (1441) | Lost 1-2 | -191480 |
| 4standard | 441 | Semrad, Michael (1482) | Lost 0-2 | -181462 |
| average opponent: 1466record: 1-3 | new rating: 1462 | |||