Amato makes career-best 24 saves, while Chanenchuk finishes his hat trick with the game-winning goal.
Maryland moves to 8-1 for the first time since 2004 with the victory.
Niko Amato makes 13 saves in the win, while Jesse Bernhardt lead the defense with 10 groundballs.
Maryland tops No. 3 seed Duke, 16-10, behind four goals by senior Drew Snider.
Snider leads Maryland with three goals in 11-5 win over Johns Hopkins
An in-depth preview of the 2012 Maryland men's lacrosse team, featuring interviews with head coach John Tillman and team captains Jesse Bernhardt, Joe Cummings and Drew Snider.