Preston, Raymond
Current rating: 1465
Record: 5-7
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 291 | Walker, Matthew [USA] (1464) | Lost 0-2 | -181461 |
| 2modern | 544 | Chandler, Bret (1481) | Won 2-1 | +191480 |
| 3modern | 518 | Dagenais, Jephree (1500) | Lost 0-2 | -181462 |
| 4modern | 650 | Garmon, Jeff (1634) | Lost 0-2 | -151447 |
| 5modern | 901 | Kienholz, Eric (1432) | Won 2-1 | +181465 |
| 6modern | 771 | Stevens, Kaleb (1481) | Won 2-0 | +181483 |
| 7modern | 564 | Wallis, Brandon (1504) | Lost 0-2 | -181465 |
| average opponent: 1500record: 3-4 | new rating: 1465 | |||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 133 | Trnavsky, Brad (1500) | Won 2-1 | +181518 |
| 2standard | 86 | Hilton, Jonathan (1518) | Won 2-1 | +181536 |
| 3standard | 162 | Blanchard, Derek (1430) | Lost 1-2 | -201516 |
| 4standard | 468 | David, Christian (1485) | Lost 0-2 | -181498 |
| 5standard | 305 | Quiroga, Leonardo (1494) | Lost 0-2 | -191479 |
| average opponent: 1485record: 2-3 | new rating: 1479 | |||