NEW YORK — Kristaps Porziņģis pointed into the crowd after one clutch basket. He lifted his arms above his head after another. He puffed out his chest and stared at some fans after a third.

NEW YORK — A bit of good fortune set up the longest of Kristaps Porziņģis’ many long 3-pointers Tuesday night. After Mikal Bridges knocked the basketball out of Jayson Tatum’s hands ...