Williamson, Colin
Current rating: 1482
Record: 6-7
| Grand Prix Salt Lake City 2012 (DKA standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 137 | Oliver, James (1489) | Lost 1-2 | -181501 |
| 3standard | 353 | Monteiro, Marcio (1514) | Lost 1-2 | -181483 |
| 4standard | 448 | Brown, LeRoy (1465) | Won 2-0 | +181501 |
| 5standard | 345 | Waters, Landon (1481) | Lost 0-2 | -191482 |
| average opponent: 1487record: 1-3 | new rating: 1482 | |||
| Grand Prix Lincoln 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 27 | Yu, Delwin (1500) | Won 2-1 | +181518 |
| 2modern | 53 | Stoffa, Gabriel (1652) | Lost 0-2 | -161502 |
| 3modern | 142 | Shaffer, Jacob (1484) | Won 2-0 | +181520 |
| 4modern | 184 | Cowan, Russell (1560) | Won 2-1 | +191539 |
| 5modern | 81 | Siadak, John (1450) | Lost 0-2 | -201519 |
| 6modern | 135 | Schmidt, Dan J (1519) | Won 2-1 | +181537 |
| 7modern | 113 | Inda, Joshua (1559) | Lost 1-2 | -171520 |
| 8modern | 145 | Swenson, Luke (1524) | Won 2-0 | +181538 |
| 9modern | 96 | Miyashiro, Justin (1523) | Lost 0-1 | -191519 |
| average opponent: 1530record: 5-4 | new rating: 1519 | |||