2007-08: In his sophomore season with Princeton, MacIntyre posted 13 goals and 18 assists through 31 games – good for third on the team. At the end of his season he was a free agent invite to the Pittsburgh Penguins prospect training camp.
2008-09: The forward battled injuries all season, posting only 1 goal and 5 assists through 14 games. He also managed 24 penalty minutes.
2009-10: During another injury riddled season, MacIntyre posted 6 goals and 4 assists in 10 games. He was signed to an entry-level deal by the Sharks in early April.
2010-11: The lingering injury issues that hampered MacIntyre in his last two seasons at Princeton continued in his first year of pro hockey – as he skated in 42 games for the AHL's Worcester Sharks. When healthy, MacIntyre showed both toughness and some scoring ability while his defensive game remains a work in progress. He finished the season with 32 PMs, including four fighting majors, and scored 4 goals with 8 assists with a -15 plus/minus. Worcester missed the playoffs, finishing three points behind the Connecticut Whale for the final spot.