A 6'7" forward born in LaGrange, Georgia, Mahaffey played college basketball at Clemson University.

They marked the first time in Atlantic Coast Conference (ACC) history that four brothers played for the same program.

On December 30, 1968, the Colonels traded Mahaffey and Manny Leaks to the New York Nets for Oliver Darden and Andy Anderson.

Randy Mahaffey's grandson Trent Steinour, a 6'10 Power Forward from Lake Norman High School, has committed to play at Clemson University beginning in the 25/26 season, he is the son of Randy's daughter, Lee Mahaffey Steinour.

This biographical article relating to a United States basketball player, coach, or other figure born in the 1940s is a stub.