The Cleveland Cavaliers currently have the top-ranked defense in the NBA, and the reason can be summed up in two words: Evan Mobley.

When Mobley is on the court, the Cavaliers allow just 101.3 points per 100 possessions -- a figure that would rank among the best in NBA history.

Rim Protection Mastery

Opponents are shooting just 53.2% at the rim when Mobley is the primary defender, 12 percentage points below the league average. His combination of 7'0" height, 7'4" wingspan, and elite instincts make him nearly impossible to score over.

Perimeter Versatility

Mobley has defended isolations from wings and guards 187 times this season, allowing just 0.71 points per possession -- better than most perimeter defenders.

"He's the best defender in basketball," Mitchell said. "That's not even debatable anymore."