The 75 greatest players in NBA history, ranked by Player Efficiency Rating (PER)

66.    LaMarcus Aldridge-20.70

Former NBA star LaMarcus Aldridge was one of the most skilled big men of his era and has a chance to make the Basketball Hall of Fame. Aldridge spent the majority of his career with the Portland Trail Blazers and San Antonio Spurs, where he proved to be a two-way force. 

He was already a good shooter when he entered the NBA in 2006 but he developed muscle and became a bruising post player who could back just about any opposing big man down, toss an elbow to gain separation and then hit a devastating turnaround jumper that was unblockable. 

Defensively, he was big at 6'11, could move his feet and boasted a 7'5 wingspan. That allowed him to become a strong rim protector and the Spurs had three top-5 finishes in defensive rating with Aldridge anchoring them.

He proved to be a terrific scorer, finishing with more than 20,000 career points but was criticized for his reliance on mid-range jumpers. This despite him being one of the most efficient jump shooters in the NBA. He would later step out and begin to knock down threes at an impressive rate. However, had he done that sooner, he would have ranked even higher in all-time PER.