Past performance speaks a tremendous amount about one’s abil… Past performance speaks a tremendous amount about one’s ability and likelihood for success. — Mark Spitz Tags: #Past, #Ability, #Amount, #MarkSpitz, #American, #Athlete Mini who’s who: Mark Spitz : American Athlete Born: February 10, 1950 Let us help you with past performance speaks a tremendous amount about one’s abil… today! Submit a Comment Cancel replyYou must be logged in to post a comment.