Knights was moved briefly to full-forward in 1972 after a serious knee injury to Peter Hudson forced Hawthorn to experiment in the position before finally settling on Michael Moncrieff. He actually finished as Hawthorn's leading goal-kicking with 46 goals, but was moved back to defence before the season was over. After injury problems restricted his 1973 season, for the next three years Knights was rated the best centre half-back in the game. In 1975, Knights finally had the chance to participate in the first of four Grand Finals. North Melbourne were too good on the day, winning their first-ever Premiership. Knights was Hawthorn's best player on the day, and capped off a fine personal year by winning the club Best and Fairest award.