In the first-round of the 2015 NBA Playoffs between the Celtics and Cavs, Kevin Love got injured in Game 4 while battling for a rebound with Kelly Olynyk. Love ended up missing the rest of the postseason with a shoulder injury and was quite angry with Olynyk, who had grabbed the Cavs forward's arm and yanked it in an effort to get rebounding positioning.

Olynyk apologized profusely to Love and was quite upset that his play caused an injury. Fast-forward to now, it seems like Olynyk still hasn't really changed how he rebounds as against the Bulls on Tuesday, the Celtics forward used a similar arm lock on Robin Lopez.

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Officials didn't blow their whistle on the play and Lopez didn't get injured, so perhaps no harm, no foul. But clearly Olynyk hasn't learned the errors of his ways.