Shafer, Mathew J
Current rating: 1463
Record: 2-4
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 376 | Radmard, Amir (1500) | Lost 1-2 | -181482 |
| 2sealed | 431 | Taylor, Ian (1482) | Lost 0-2 | -181464 |
| 3sealed | 587 | Scribner, Gavin Drake (1464) | Won 2-0 | +181482 |
| 4sealed | 519 | Rogos, Caleb (1482) | Won 2-1 | +181500 |
| 5sealed | 451 | Hallahan, Brian (1456) | Lost 1-2 | -191481 |
| 6sealed | 446 | Waner, Chris (1480) | Lost 0-2 | -181463 |
| average opponent: 1477record: 2-4 | new rating: 1463 | |||