Use this greatest athletes of all time tier list to rank your favorites from best to worst. Drag items into S, A, B, C, or D tiers and share your greatest athletes of all time rankings with friends. Whether you're debating the best greatest athletes of all time or settling an argument, this tier list maker lets you create the perfect greatest athletes of all time ranking and compare with other Americans on TierBuddy. Popular categories include sports, athletes, nfl, mlb.