Did this play lead Marcus Morris to push Celtics teammate Jaylen Brown?

Why would Marcus Morris shove his Boston Celtics teammate Jaylen Brown during a timeout, an incident captured on camera Thursday night?

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

Thanks to some sleuthing by NBC Boston’s Chris Forsberg, it’s possible we have an answer:

You can see 7:12 on the clock. This was during a second-quarter stoppage. At 8:01 you can see Morris get visibly upset after Brown is late getting back on defense. Seems tempers flared at the next stoppage. https://t.co/GIwKshTWJy
— Chris Forsberg (@ChrisForsberg_) January 11, 2019

Here’s the play that Forsberg is talking about: Brown gets blocked by a member of the Heat, leading to a Miami fast-break bucket that the Celtics basically play 4-on-5 because Brown isn’t back on defense:

The play when Marcus Morris got upset with Jaylen Brown for being late getting back on defense. (h/t @Celticsinsider7) #Celtics pic.twitter.com/dl9Ct1ykp0
— Adam Kaufman (@AdamMKaufman) January 11, 2019

That can’t be good for the Celtics’ chemistry.

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