Gary played and excelled in sports at the high school, college and professional levels.
At Bemidji High School in Bemidji, MN, Gary was an NCAA DI prospect in football, baseball, and hockey. He turned down an offer from the Minnesota Twins baseball team after high school graduation to pursue a career in hockey.
Gary played hockey at Bemidji State College for one year. During this time Gary was named to the World Cup team and played collegiate hockey in Graz, Austria. This team won a silver medal. He was named a college All American while playing at Bemidji State College.
Gary played junior hockey with the Fargo Moorhead Sugar Kings for one year before turning professional. He played in the American Hockey League before joining the Los Angeles Kings for three seasons.
In 1977 Gary signed with the Minnesota North Stars and played there until his retirement from professional hockey in 1983. During his tenure with the North Stars he was selected to the NHL All Star Team twice, and played in 402 games in the NHL.