The Celtics and 76ers were two of the NBA's better and more rugged defensive teams this season.

Boston led the league in defensive field percentage, while Philadelphia ranked third.

Doc Rivers expects the series to be low-scoring.

“What Philly did was, they defended Chicago,’’ Rivers said before Friday’s practice. “Chicago really struggled scoring. We talk about Philly and their athleticism and their running, but what people keep forgetting is they’re not a good defensive team - they’re a great defensive team.

“They’re going to try to make us struggle scoring and we’re going to make them struggle scoring, too.’’