Cavaliers' JR Smith Posterizes Celtics' Aron Baynes

Cleveland Cavaliers guard JR Smith is known for shooting from beyond the three-point arc, but he took the ball to the rim with authority in the first quarter of Sunday's game against the Boston Celtics at TD Garden.

With under 6:50 to play in the period, Smith dribbled past former teammate Kyrie Irving en route to the bucket.

Boston center Aron Baynes rose for a rejection, but Swish threw down a monstrous dunk over the defender.

The 2015-16 NBA champion commemorated the moment by staring down his defeated opponent.

It looks like JR has a new celebration in his arsenal.

[Twitter]