Stoneham: Marblehead senior captain Ian Maag, left, screams in celebration after he scored Marblehead's first goal of the night, tying the game at 1-1. Maag went onto score two additional goals to complete his hat trick as the Headers took down Rockport 4-2 to advance to the D3 North semi-finals against NEC rival Swampscott. David Le/Salem News