BOSTON — Jrue Holiday provided scoring. Derrick White added a chase-down block. Jayson Tatum and Jaylen Brown contributed, too — with their passing and defense.

The Mavericks can stop worrying about who Boston’s best player is. Everyone the Celtics put in the game is helping them close in on an unprecedented 18th NBA championship.

Holiday had 26 points and 11 rebounds, and White sprinted down the court to swat away Dallas’ last chance to make it a one-possession game on Sunday night…