UMBC evened its records at 8-8 overall and 2-2 in league play, while Hartford fell to 6-12, 2-2.
Hartford sophomore forward Morgan Sabia was Hartford's America East Player of the Game, scoring 18 points.
The Retrievers took the lead for good by scoring five straight points after the game was tied at 21-all with 5:58 remaining in the first half. UMBC settled for a 33-29 lead at intermission and improved to 6-0 on the campaign when leading at the half. Hartford fell to 0-10 when behind at the break.
The Retrievers extended the advantage to as many as 14 points at 59-45 with 6:35 to play and had three possessions to extend that margin, but came up empty each time and the Hawks would creep back into contention. Freshman post Genesis Maciel hit an improbable baseline three-pointer and was fouled with 50 seconds left. He converted to trim the deficit to 63-57, but Spadafora hit four straight free throws and freshman wing Chauncey Gilliam (Columbia, Md.) added a pair in the final minute to preserve the UMBC win.
Hartford's leading scorer, Jaret von Rosenberg, who hit for 50 points in his last two games, was held to 1 of 12 shooting by Spadafora and company, although he did manage a game high six assists and corralled 11 rebounds.