For the 2017-2018 regular season the Cavs averaged just under 111 points per game. In games which they don't hit 3 digits they almost always lose. During the regular season the Cavs didn't score 100 points in 14 of their games. Their record for those games was 2-12. So far in the postseason the Cavs have been short of the century mark 6 times. Their record during those low scoring affairs is 1-5. On the other hand the Cavs are a perfect 7-0 in the playoffs when scoring at least 100.
Dig deep Celtics' defense, dig deep.