Paced by a career-high 37 saves from freshman Sean Maguire, the No. 8 Boston University men’s hockey team posted a 4-1 win over Merrimack Friday at Lawler Arena in North Andover.

  Wade Megan opened the scoring for BU (12-7-0, 9-4-0 Hockey East) at 12:20 of the first period with his second shorthanded goal of the year.