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

33.    Kyrie Irving-22.39

Dallas Mavericks star Kyrie Irving is considered to be one of the most skilled players currently in the NBA but comes in surprisingly high on this list. While no one doubts Kyrie's talent and skill, he has frequently missed time either due to injuries or off-the-court antics. Despite that, PER isn't a cumulative statistic and simply measures how productive a player is when he plays and Kyrie is absolutely productive.

Over his last 11 seasons, excluding his rookie season, Kyrie has averaged 23.5 points while shooting 51.4% from the field, 39.3 3-pointers, and 88.6% on free throws. That is incredible efficiency considering the gold standard is 50/40/90 shooting splits, not to mention he is also averaging 5.7 assists, 4 rebounds, and 1.3 steals over that span.

Scoring nearly 17,000 points while shooting at a near-peak level is the perfect recipe for having a PER over 20 and he has managed to do that every season of his career thus far. Of course, unlike many of the players on this list—most of whom have retired—Kyrie hasn't gone through an inevitable decline. But given how consistent he's been thus far, it's hard to imagine him dropping much in these all-time rankings when all is said and done.