Colvin, Joseph
Current rating: 1488
Record: 1-2
| Grand Prix Oklahoma City 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 111 | Cannon, Thomas (1500) | Won 2-0 | +181518 |
| 2sealed | 297 | Weil, Noah (1879) | Lost 1-2 | -121506 |
| 3sealed | 411 | Hosey, Justin (1489) | Lost 0-2 | -181488 |
| average opponent: 1623record: 1-2 | new rating: 1488 | |||