Costigan, Harrison
Current rating: 1504
Record: 2-2-1
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 31 | Carmichael, Leo (1500) | Won 2-0 | +181518 |
| 2sealed | 79 | Hahn, Robert (1484) | Won 2-1 | +171535 |
| 3sealed | 83 | Bencivenga, Dominic (1587) | Lost 0-2 | -171518 |
| 4sealed | 204 | Williams, Ronald (1519) | Draw 1-1 | 01518 |
| 5sealed | 139 | Edwards, Craig (1723) | Lost 0-2 | -141504 |
| average opponent: 1562record: 2-2-1 | new rating: 1504 | |||