Unless the Celts go stupid and chuck up 50 3-pointers having a very poor shooting night, I don't see how the Celts lose. With Embiid out, the Celts ought to set a season low for 3-point attempts. It ought to be a layup drill.
It will be interesting to see if PHI doubles Tatum like ATL often did. That is what opened up a lot of cutting and driving to the basket. Al was the key to this actually. When he was in, ATL had to choose between staying with Al or rotating to defend the rim. We were able to exploit either way, Al got shots or we got buckets at the rim. The dynamic changed when RWill was in. Easier for ATL to sag a defender at the rim.
Embiid is really good at defending at the rim, without fouling. But if he is at the rim, Al can be open in the corner for a 3. Or if Embiid has rotated off of RWill, the lob is an option. The spread worked better vs. ATL when Capela was sagging to defend the rim. Either Al was open or the lane was open.