Four leftover observations from the Celtics-Sixers opener

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A collection of leftover thoughts and takeaways after a second look at the Celtics' opening night loss to the Sixers on Wednesday night. 

Jaylen Brown and company needs to be more disciplined on defense: It’s no coincidence that the offense went cold on a night Brown was only able to spend 21 minutes on the floor due to foul trouble. The swingman performed well early on with his activity on the defensive end while also managing to hold his own against Al Horford in the post. However, failing to adjust to a game that was being called very tight from the officials cost Boston one of its top scorers for 10-plus minutes in this one.

Brown was whistled for his fourth foul early in the second quarter and followed it up with another quick one in the third quarter. Brown fell for head fakes on multiple occasions, leaving his feet and opening the door for easy calls by officials. Brown’s value to the team is too important right now to put himself in these kinds of positions. Additionally, the C’s as a team took far too many avoidable fouls early in the first half that led to the Sixers getting into the penalty quickly in the midst of their offensive rut. Physicality will be essential for this group to survive on the defensive end with their ball pressure but there is a fine line between making life tough on opponents and putting yourself at the mercy of the officials. The Celtics did that far too much in the opener and need to play smarter to maximize their chances and personnel in this game.

Gordon Hayward wasn’t shy about getting to the hoop: The swingman piled up a game-high 25 points