2005-06: Mason enjoyed an outstanding rookie season with Clarkson as one of the team’s top four defensemen, seeing regular duty as junior Michael Grenzy’s (CHI) partner. The Dawson Creek, BC native notched six points (one goal, five assists). He was one of only two Golden Knights (and the lone freshman) to play in all 38 games. Mason’s plus-10 also led the team. His first collegiate point (an assist) came back on October 8, 2005 versus Niagara. Mason notched his first collegiate goal on February 10, 2006 versus Cornell.
2007-08: In his junior year with the Clarkson Golden Knights (ECACHL), Mason proved that he is a solid stay-at-home defenseman and played a key role in Clarkson’s stingy defensive effort. He was the second leading scorer from the Knights’ blueline with 10 points, including nine assists. He helped to set up Clarkson’s first goal in their 2-1 victory over St. Cloud State in the NCAA East Regional (3/28), and he set up a goal in each of their last two ECAC Hockey quarterfinal series games against Colgate (3/15-16). He posted a +8 plus/minus rating and led the team in penalties (30/60). He was named to ECAC Hockey weekly Honor Roll three times and was voted Team Captain for the 2008-09 season.