Harshbarger, Rex
Current rating: 1509
Record: 3-3
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 397 | Melvin, Paul (1789) | Won 2-1 | +231523 |
| 2modern | 87 | Fang, Li (1518) | Won 2-1 | +181541 |
| 3modern | 102 | Pardee, Samuel (1818) | Won 0-0 | +231564 |
| 4modern | 92 | Pentico, Trevor (1552) | Lost 1-2 | -181546 |
| 5modern | 263 | Petray, Elizabeth (1549) | Lost 1-2 | -181528 |
| 6modern | 363 | Hicks, Jackson (1489) | Lost 0-2 | -191509 |
| average opponent: 1619record: 3-3 | new rating: 1509 | |||