Throughout the 20th century, athletic heroes have altered their respective sports with spectacular achievements, renewing their fans' confidence and surpassing their expectations with pioneering fearlessness, powerful expertise and unforgettable performances. In They Changed the Game, authors Ken Rappoport and Barry Wilner profile professional sports' trailblazing champions, from boxing great Muhammad Ali to runner extraordinaire Jesse Owens, from stock-car racer Richard Petty to incomparable sportswoman Babe Didrickson.