O'Niell, John
Current rating: 1482
Record: 4-5
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 223 | Bovett, Sean (1500) | Lost 0-2 | -181482 |
| 2extended | 224 | Szylewicz, Aaron (1481) | Won 2-1 | +181500 |
| 3extended | 252 | Muhlbach, Kevin (1501) | Won 2-1 | +181518 |
| 4extended | 207 | Meyer, Ben (1500) | Lost 1-2 | -181500 |
| 5extended | 309 | Nicosia, Alvaro (1442) | Lost 1-2 | -191481 |
| 6extended | 283 | Holmes, Kevin (1465) | Won 2-0 | +171498 |
| 7extended | 215 | Nytch, Richard (1503) | Won 2-0 | +181516 |
| 8extended | 142 | McCall, Max (1611) | Lost 0-2 | -161500 |
| 9extended | 119 | gallagher, nick (1503) | Lost 0-2 | -181482 |
| average opponent: 1501record: 4-5 | new rating: 1482 | |||