 Simpson was returning from his best professional season, in which he earned his first All-Pro recognition and first rushing title.In addition to establishing a then-record for single-season rushing yardage, with 2,003, Simpson established the single-season record for rushing yards gained per game (143.1 yards per game on 23.7 rushes per game, an average of six yards per carry), which still stands.The explosive offense centered on O.J.