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J.R. Smith On Marcus Smart: “You Can’t Flop As Much As You Do, And Then Be Tough.”

(Photo by Maddie Meyer/Getty Images)

(Photo by Maddie Meyer/Getty Images)

On the heels of an epic fight night, a much smalller rivalry was brewing.

In the NBA, J.R. Smith and Marcus Smart are at an all-out war. Following a game-time altercation between the two, Marcus Smart challenged J.R. to meet him after the game, proving that he wasn't scared to back up his tough words.

J.R. went a different direction entirely, instead chosing to attack the guy's character. Here's what he said:

Could the Cavs vs Celtics matchup be the league's new rivalry?

Eh, maybe not. But it will still be entertaining to see two stubborn headed-dogs go at each other from time to time.