Marsden, Andrew
Current rating: 1554
Record: 6-3
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 47 | Cicalo, Joseph (1465) | Won 2-0 | +171517 |
| 2sealed | 310 | Tremblay, Sebastien (1553) | Won 2-1 | +191536 |
| 3sealed | 170 | Wenokor, Eric (1463) | Won 2-0 | +171553 |
| 4sealed | 55 | Kirchner, Richard (1554) | Lost 0-2 | -181535 |
| 5sealed | 305 | Vondruska, Jeff (1487) | Lost 1-2 | -191516 |
| 6sealed | 387 | Wilbur, Nick (1620) | Lost 0-2 | -161500 |
| 7sealed | 465 | Jacob H., (1507) | Won 2-0 | +181518 |
| 8sealed | 325 | Dunn, Ryan (1545) | Won 2-1 | +181536 |
| 9sealed | 193 | Fournier, Daniel (1512) | Won 2-0 | +181554 |
| average opponent: 1523record: 6-3 | new rating: 1554 | |||