OG Anunoby clutched his left hamstring as he came off the court at the end of the first quarter in what had to feel like a dubious reminder of the painful injury that sidelined the Knicks’ defensive stopper in the playoffs last spring.

Knicks forward OG Anunoby appeared to suffer an injury to his upper left leg late in the first quarter of Game 4 against the Boston Celtics on Monday.