Stelford, Preston
Current rating: 1539
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 219 | Stroud, David (1768) | Lost 1-2 | -141525 |
| 2standard | 602 | Ferreira, Kyle (1429) | Won 2-0 | +171542 |
| 3standard | 586 | Gering, Brandon (1502) | Won 2-0 | +171559 |
| 4standard | 457 | Iosso, Keith (1537) | Draw 1-1 | -11558 |
| 5standard | 349 | Hibbs, Brett (1485) | Won 2-0 | +171575 |
| 6standard | 235 | Brown, Ethan (1667) | Lost 1-2 | -161559 |
| 7standard | 339 | Finley, Christopher (1486) | Lost 1-2 | -201539 |
| top | average opponent: 1554record: 3-3-1 | new rating: 1539 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 93 | McCormick, William (1613) | Won 2-0 | +201540 |
| 2sealed | 23 | Ryan, Jacob (1426) | Lost 1-2 | -201520 |
| 3sealed | 188 | Ross, Robert (1625) | Won 2-1 | +201540 |
| 4sealed | 211 | Gibson, Jack (1499) | Won 2-1 | +171557 |
| 5sealed | 54 | Bennett-Kennett, Ross (1536) | Won 2-0 | +181575 |
| 6sealed | 63 | Parker, Matt D (1556) | Lost 1-2 | -191556 |
| 7sealed | 64 | Sun, Qiushi (1600) | Lost 1-2 | -171539 |
| top | average opponent: 1551record: 4-3 | new rating: 1539 | ||
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 99 | Collins, Jeff (1482) | Lost 1-2 | -181482 |
| 2sealed | 157 | Gonzales, Cameron (1469) | Lost 0-2 | -191463 |
| 3sealed | 194 | Kinsey, Neal (1465) | Won 2-0 | +181481 |
| 4sealed | 208 | Nash, Theron (1481) | Lost 1-2 | -181463 |
| 5sealed | 221 | Malick, Alexandria (1464) | Won 2-0 | +181481 |
| 6sealed | 190 | Rubin, Rafi (1473) | Won 2-0 | +181499 |
| 7sealed | 148 | Emami, Kevan (1630) | Lost 0-2 | -151484 |
| 8sealed | 123 | Robledo, Steven (1479) | Won 2-0 | +181502 |
| 9sealed | 103 | Pichardo, Luis (1545) | Won 2-0 | +181520 |
| top | average opponent: 1499record: 5-4 | new rating: 1520 | ||