Greening finished his four-year career ranked 37th all-time at Cornell in scoring, recording 55 goals and 118 total points while never missing a game over his career. He finished his senior season with 15 goals and 20 assists and was named both the ECAC Hockey Student-Athlete of the Year and the winner of the Lowe's Senior CLASS Award for men's hockey. He also was a two-time CoSIDA Academic All-American, including a first-team selection in 2010. A two-time first-team All-Ivy League player, Greening served as team captain twice while also serving as an alternate captain during his sophomore season, the first sophomore to do so under the direction of head coach Mike Schafer. He helped to lead the Big Red to its first ECAC Hockey tournament title since 2005 with a 3-0 victory over Union, and led the Big Red to a pair of NCAA tournament appearances. Greening signed a professional contract with the NHL's Ottawa Senators.
