Joe Mazzulla tells trainer to not go out there then yells at Jayson Tatum to GET UP

Up by 26 Joe Mazzulla went right up to Jayson Tatum and Jaylen Brown after the timeout and was coaching them up

Jayson Tatum doing some workout during a timeout

Joe Mazzulla tries to change his call for a challenge to a normal timeout after being told by his assistant coach Amile Jefferson NOT to challengeIt was too lateChallenge was not successful

Jayson Tatum air balls the layup attempt over Andre Drummond the refs say it is Celtics ball despite Andre never touching it Eventually the refs change their mind say it is 76ers ball Joe Mazzulla with unsuccessful challenge for a proximate foul prior

Jayson Tatum leans forward on the 3-point attempt and Paul George is called for his 3rd personal foul of the 1st half with a replayPG talks with the referee before being subbed out

Jayson Tatum receives a delay of game violation after failing to draw a foul on Tyrese Maxey