Tatum, Gary
Current rating: 1482
Record: 1-2
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 350 | Baker, Steve (1483) | Lost 1-2 | -181482 |
| 2sealed | 274 | Jacobs, Steven (1482) | Won 2-0 | +181500 |
| 3sealed | 159 | Morrison, Robin (1501) | Lost 0-2 | -181482 |
| average opponent: 1489record: 1-2 | new rating: 1482 | |||