2009-10: Spencer Abbott skated in 38 of 39 games for the University of Maine as a sophomore. Playiing on Maine's second line with Robbie Dee (EDM) and David deKastrozza much of the season, he scored 9 goals with 19 assists and was plus-one with 6 penalty minutes. The Black Bears finished fourth in Hockey East and reached the conference championship game, falling 7-6 to eventual national champion Boston College in a wild 7-6 overtime game.
2010-11: Abbott was the second-leading scorer for Maine as a junior with 40 points in 36 games; eleven points behind Red Wings' prospect Gustav Nyqvist, the Black Bears leading scorer. Once again playing alongside Dee much of the time, he scored 17 goals with 23 assists and was plus-nine with 16 penalty minutes. The Black Bears finished fifth in Hockey East and their season ended in the playoff quarterfinals when they were swept by Merrimack.
2011-12: Abbott made his pro hockey debut, signing an entry level contract with the Maple Leafs in March 2012 and joining their AHL affiliate Marlies following his senior season at Maine. He had 1 assist and was minus-one in three regular season games and appeared in five playoff games with no points nor penalty minutes. Abbott was the Hockey East Player of the Year and a First Team East All-American in his final season with the Black Bears — scoring 21 goals with 62 assists and finishing plus-14 with 34 penalty minutes in 39 games. The Black Bears finished fourth in Hockey East and earned their first NCAA tournament bid since 2006-07 after reaching the Hockey East championship game for the second time in three seasons.