Mason, Jamie
Current rating: 1479
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 36 | Ross, Stuart (1500) | Won 2-1 | +181496 |
| 2sealed | 117 | Yarrow, Ivy (1518) | Won 2-0 | +181514 |
| 3sealed | 61 | Senneway, Bill (1536) | Lost 0-2 | -171497 |
| 4sealed | 180 | Paterson, Matthew (1520) | Lost 1-2 | -181479 |
| top | average opponent: 1518record: 2-2 | new rating: 1479 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 495 | Trevino, Simon (1500) | Won 2-0 | +181531 |
| 2sealed | 440 | Holland, Jeffery (1557) | Lost 0-2 | -171514 |
| 3sealed | 610 | Dupuis, Deven (1500) | Lost 0-2 | -191495 |
| 4sealed | 670 | Carr, Ezra (1506) | Lost 0-2 | -171478 |
| top | average opponent: 1516record: 1-3 | new rating: 1478 | ||
| Grand Prix Indianapolis 2008 (SHM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 98 | Bushard, Ryan (1462) | Won 2-0 | +171517 |
| 2sealed | 289 | Speer, Jamie (1428) | Won 2-1 | +171534 |
| 3sealed | 17 | Gilley, Jonathan (1438) | Lost 0-2 | -201514 |
| 4sealed | 206 | Becraft, Harley P (1483) | Won 2-1 | +171531 |
| 5sealed | 101 | Donathan, William (1535) | Lost 1-2 | -181513 |
| top | average opponent: 1469record: 3-2 | new rating: 1513 | ||