Why did tempers flare on Celtics bench in loss to Heat?

The good vibes from the Celtics’ four-game winning streak quickly faded on Thursday night as the visitors dropped an ugly one in South Beach, 115-99, on the second half of a brutal back-to-back set. This was far from Boston’s best defensive effort and we saw some frustrations simmer over on that front in the second quarter after a video surfaced on an Instagram account that showed Marcus Morris and Jaylen Brown exchanging words before Morris shoved Brown. Both players were quickly separated by teammates and coaches.

Jaylen Brown and Marcus Morris had to get separated during a timeout...

(via ahubbtho/IG) pic.twitter.com/1EyBZyzvUn

— Bleacher Report (@BleacherReport) January 11, 2019