"We've only had two NBA champions over the last twenty two years outside of the top ten in defensive rating. The Warriors were 11th in '17 and then it was the Lakers in '01. I believe they were 21st. So now you look at it and ironically the Celtics led the league in defensive rating and the other three remaining teams also in the top 10. Miami fourth, Golden State second and Dallas seventh. So it's true: offense sales tickets, defense wins championships and you've got a very cohesive connected unit. Excellent shell drill defense by the Celtics and you're right Dave when you switch you have less rotations to contend with. "