Guy Mackner, a 6-7 center from Sisseton, S.D., averaged 19.9 points and 11.6 rebounds per game as a junior for his best season as a Jackrabbit. Mackner earned all-conference honors as a junior and senior and led NCC in rebounding in 1968, averaging 12.5 rebounds per game in league play. He also was named to the all-tournament team at the Great Lakes Regional.
Following a collegiate career in which he finished with 1,114 career points and averages of 15.1 points and 8.8 rebounds in 74 games, Mackner was a sixth-round draft pick of the Atlanta Hawks. After being released by the NBA team, he played for the Goodyear Tire and Rubber team in the U.S. Industrial League, then spen 1970-72 in the U.S. Army, where he was a member of the armed forces basketball team. While in the military he became a player-coach for the U.S. Team Handball Olympic Development team.
Mackner moved back to Sisseton in 1972, where he owns and operates the family ranch.