Boulden, William
Current rating: 1416
Record: 6-11
| Grand Prix Minneapolis 2014 (modern) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 444 | Therrien, Daniel (1466) | Lost 0-2 | -181431 |
| 2modern | 726 | Gravdahl, Daniel (1486) | Won 2-0 | +191450 |
| 3modern | 675 | Bremer, Carl (1501) | Lost 1-2 | -171433 |
| 4modern | 815 | Kilber, Thomas (1482) | Lost 0-2 | -171416 |
| top | average opponent: 1484record: 1-3 | new rating: 1416 | ||
| Grand Prix Montreal 2014 (BNG limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 184 | Boucher, Robert (1430) | Lost 1-2 | -191467 |
| 2sealed | 516 | Chatel, Cedric (1465) | Lost 1-2 | -181449 |
| top | average opponent: 1448record: 0-2 | new rating: 1449 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 132 | Pulliam, Steven (1477) | Lost 0-2 | -181464 |
| 2legacy | 205 | Moss, Chandler G (1481) | Won 2-0 | +181482 |
| 3legacy | 159 | Varas, John (1500) | Won 2-1 | +191501 |
| 4legacy | 113 | Cruse, William (1581) | Lost 1-2 | -171484 |
| 5legacy | 170 | Riddick, Jared (1499) | Won 2-1 | +181502 |
| 6legacy | 118 | Chodan, Ross (1585) | Lost 1-2 | -161486 |
| top | average opponent: 1521record: 3-3 | new rating: 1486 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 123 | Morin, Phillip (1465) | Won 2-0 | +171517 |
| 2sealed | 84 | Gutknecht, Rene (1483) | Lost 0-2 | -181499 |
| 3sealed | 203 | Hayne, Alexander (1459) | Won 2-0 | +171516 |
| 4sealed | 141 | Burnett, Kai (1637) | Lost 1-2 | -161500 |
| 5sealed | 187 | [anonymous] | Lost 1-2 | -181482 |
| top | average opponent: 1509record: 2-3 | new rating: 1482 | ||