The Haks advance the ball quickly on the fast break and looked like they would have an easy basket.

Enter J.R. Smith. Smith came out of nowhere and rejected the shot off the backboard.

RELATED: VIDEO: J.R. Smith Swishes Half-Court Shot And Wins Military Member $30,000

You may also likeArticle continues below
Cavs rumors: Shams drops bombshell revelation on LeBron James' secret free agency meeting
Kendrick Perkins drops 10-year Cavs title declaration after whiffing on LeBron James
Cavs rumors: What Cleveland hasn't been willing to trade amid Jonathan Kuminga interest
Cavs rumors: Why Mario Hezonja signing still isn't finalized yet