Kevin Durant calls Mark Cuban 'an idiot' for saying Russell Westbrook isn't a superstar

Less than an hour before tip-off of the Thunder's Game 5 win over the Mavericks -- one that eliminated Dallas from the postseason -- Mark Cuban decided to randomly disparage Russell Westbrook.

For reasons unknown, Cuban tried to explain that Westbrook was "an All-Star but not a superstar." 

Westbrook crushed the Mavs on this night, finishing with a game-high 36 points, 12 rebounds and nine assists. When he was asked about Cuban's comments afterward, Kevin Durant stepped in and answered the question for him, and didn't hold back when giving his response.

"He's an idiot. Don't listen to him," Durant said, after placing his hand in front of Westbrook's microphone so that he wouldn't respond. "He's an idiot. That's what we've got to say about that. He's an idiot."

Durant, of course, will be an unrestricted free agent this summer. Cuban probably shouldn't be going out of his way to clear his calendar for a meeting with Durant once July is upon us.