AMHERST — Merrimack hits the ice tonight at the Mullins Center to take on UMass at 7 p.m. This is the first game of a home-and-home series that will conclude tomorrow night at Lawler Arena. Zachary Borgiel will dress for the Warriors tonight. He did not dress in last Saturday’s loss to Colgate. Borgiel is the projected starter if the Warriors continue their goalie rotation, as they have for every game this season.