BOSTON — Boston University beat Providence in the weekend's opening game at TD Garden, which is good news for Merrimack. That improves the Warriors’ chances of qualifying for the NCAA Tournament as an at-large team. However, in St. Paul, Colorado College beat Denver in the weekend's opening game for the NCHC. That keeps a potential spoiler team alive. Meanwhile in Lake Placid, Colgate beat Quinnipiac in double overtime. That keeps another potential spoiler team alive.