Wilt Chamberlain highest single-season PER seventh-best fourth-best in league history 3 of the top 15 PERs in league history highest in NBA history the tenth best season ever by an individual player Basketball-Reference.com 3 of the top 15 PERs in league history 11th all-time mark http://www.basketball-reference.com/leaders/per_season.html PER Single Season leaders PER-1 ranking alongside the greatest regular season in NBA history his PER 3 of the top 15 PERs in league history http://www.basketball-reference.com/...er_season.html Only six other players basketball-reference.com’s numbers http://www.basketball-reference.com/...er_season.html ranking alongside top 10 for highest PER gold standard Four historically great NBA record Basketball-Reference.com highest in NBA history the top 100 all time top 10 for highest PER PER leaderboard all-time record 11th all-time mark the eighth-best season ever historically great season according to Basketball-Reference.com Only six other players all-time record all-time PER list