Dugdale, John
Current rating: 1450
Record: 6-9
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 113 | Holloway, Zachary (1482) | Won 2-1 | +191487 |
| 2sealed | 116 | Campbell, Erin (1391) | Lost 0-2 | -201467 |
| 3sealed | 404 | Weyer, Kevin (1500) | Lost 0-2 | -171450 |
| top | average opponent: 1457record: 1-2 | new rating: 1450 | ||
| Grand Prix Portland 2013 (modern) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 253 | Williams, Aaron M (1429) | Lost 0-2 | -191468 |
| 2modern | 354 | Scheffler, Jonan (1429) | Won 2-1 | +181486 |
| 3modern | 203 | Tippett, David (1499) | Won 2-0 | +181504 |
| 4modern | 194 | Zelick, Aaron (1518) | Lost 1-2 | -181486 |
| 5modern | 248 | Hixon, Dennis (1506) | Lost 1-2 | -181468 |
| top | average opponent: 1476record: 2-3 | new rating: 1468 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 146 | Calhoun, Justin (1500) | Won 2-1 | +181500 |
| 2extended | 81 | Kurtin, Matthew R (1525) | Lost 0-2 | -171483 |
| 3extended | 212 | Salazar, JP (1499) | Won 2-0 | +181501 |
| 4extended | 227 | Rasmussen, Ben (1736) | Lost 1-2 | -141487 |
| top | average opponent: 1565record: 2-2 | new rating: 1487 | ||
| Grand Prix San Diego 1999 (MMQ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 9 | Bridges, Bret (1500) | Lost 0-0 | -181482 |
| 2sealed | 96 | Potter, Jason (1485) | Won 0-0 | +181500 |
| 3sealed | 75 | Gutierrez, Michael (1500) | Lost 0-2 | -181482 |
| top | average opponent: 1495record: 1-2 | new rating: 1482 | ||