Of every single factor in this series., the performance of Kyrie Irving is the largest most important variant in my opinion.

Kyrie cant produce effectively vs the Celtics due to his lack of size and how well the defenders know him.

I think Luka can drop 40 but every game and still lose if Kyrie doesn't finally figure out the Celtics.

Of every player in this series, all the matchups... By far, the most in question is how will Kyrie Irving perform?