Preston, Colin
Current rating: 1541
Record: 9-7
| Grand Prix Columbus 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 436 | Czinder, Chris (1506) | Won 2-1 | +181518 |
| 2legacy | 105 | Johnson, Michael (1452) | Lost 0-2 | -191499 |
| 3legacy | 456 | Todd, Macy (1500) | Won 2-0 | +181517 |
| 4legacy | 223 | Perez Jr., Raymond (1906) | Lost 0-2 | -111506 |
| 5legacy | 539 | Andersen, Christoffer (1787) | Won 2-0 | +231529 |
| 6legacy | 411 | Crumpler, Ken (1367) | Won 2-0 | +151544 |
| 7legacy | 214 | Macintosh, Fiona (1538) | Won 2-1 | +181562 |
| 8legacy | 111 | Kilmer, Micah (1477) | Won 2-0 | +161578 |
| 9legacy | 76 | Helfer, Zachary (1527) | Lost 1-2 | -191559 |
| 10legacy | 259 | Butler, Mark (1555) | Lost 1-2 | -181541 |
| average opponent: 1562record: 6-4 | new rating: 1541 | |||
| Grand Prix Columbus 2007 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 226 | Cumberland, Ron (1500) | Won 2-0 | +181518 |
| 2legacy | 136 | Coursey, Benjamin (1483) | Lost 1-2 | -191499 |
| 3legacy | 228 | Pritchard, Trevor (1500) | Lost 1-2 | -181481 |
| 4legacy | 288 | Fey, David (1480) | Won 2-0 | +181499 |
| 5legacy | 296 | Till, Benjamin (1531) | Won 2-0 | +191518 |
| 6legacy | 244 | Zollinger, Justin (1517) | Lost 1-2 | -181500 |
| average opponent: 1502record: 3-3 | new rating: 1500 | |||