Preston, Jeff
Current rating: 1433
Record: 2-6
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 332 | Hodge, Thomas (1518) | Lost 0-2 | -181469 |
| 3standard | 383 | Desper, Ken (1502) | Lost 1-2 | -171452 |
| 4standard | 616 | Mendoza, Juan (1413) | Lost 1-2 | -191433 |
| average opponent: 1478record: 0-3 | new rating: 1433 | |||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 47 | Bender III, Jeremy (1536) | Won 2-1 | +191519 |
| 4sealed | 22 | Oakley, Matthew (1681) | Lost 1-2 | -151504 |
| 5sealed | 156 | Portwood, John (1539) | Won 2-0 | +181522 |
| 6sealed | 197 | DeMartini, Jared (1504) | Lost 0-2 | -181504 |
| 7sealed | 231 | Walker, Bradley (1542) | Lost 0-2 | -171487 |
| average opponent: 1560record: 2-3 | new rating: 1487 | |||