Mason's long history with lacrosse started when he was given his first lacrosse stick when he was 11 years old. Throughout the next 60 years, he was involved in many different aspects of "the fastest game on two feet" ranging from playing the game to serving in several different administrative roles for teams.

During the 1940s, he played bantam, midget and junior lacrosse in Victoria and was a member of the Junior Tillicum Lacrosse Team when it represented Vancouver Island in the B.C. Championships. He also played for the Senior B Tillicum Lacrosse Club in the five team Victoria City League when the games were played at the old Stevenson Park box.

Although he had to retire from playing lacrosse in 1947 due to contracting tuberculosis, he still remained actively involved in the game and went on to become manager and coach of the Tillicums. He also helped Doug Fletcher run the Greater Victoria Lacrosse Association where he was always willing to step up and offer help wherever needed whether it was as a coach, time keeper, statistician, or director.

The majority of Mason's lacrosse years were spent with the Victoria Shamrocks Lacrosse club - he was a director for 34 years and served as the team's treasurer for 29 years, general manager for 11 years and president for 2 years. In 1988 and 1992 he was recognized by the Shamrocks / Payless club with the Outstanding Service Award for his years of dedication and in 1993 the Western Lacrosse Association honoured him with the Outstanding Executive Award. In 1994 Mason was inducted into the Canadian Lacrosse Hall of Fame as a builder and in 1995 he was also recognized by the community when he was awarded the Victoria Kiwanis Distinguished Service Award. In 1997 he was inducted into the Greater Victoria Sports Hall of Fame and in that same year, a leadership award was created in his honour for the Shamrock player who best displays the qualities of leadership both on and off the floor.

Mason shared in the excitement when the Shamrocks won the Mann Cup in 1979, 1983 and 1997, but sadly he passed away in January 1999 and missed seeing the Shamrocks win the Cup in the old Memorial Arena that September. He was a passionate and dedicated fan who did much to promote the game of lacrosse.