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

9.    Giannis Antetokounmpo-25.23

Two-time league MVP Giannis Antetokounmpo has been tearing up the league for more than a decade as a member of the Milwaukee Bucks and is already 9th in all-time PER despite still only being in his 20s.

Over the last eight seasons of his career, Giannis has put up near unprecedented numbers, posting 28.1 points on 62.2 percent true shooting, in addition to 11.2 rebounds, 5.6 assists, 1.2 steals, and 1.3 blocks.

During that stretch, he had a truly outrageous 29.3 PER, made all the more impressive by the fact that a PER of 25 is considered to be MVP-level. Considering that he has only won two MVPs, he is technically underrated based on this metric.

Giannis is generally viewed as one of the three best players in the NBA and that isn't likely to change in the near future with him still under 30. Three or four more seasons playing at this level would propel him further up this list and solidify his place as one of the greatest players in NBA history.