Kristaps Porzingis said after Game 2 that he's feeling off due to an illness as that's another challenge the Celtics must overcome.

Boston Celtics veteran big man Al Horford said the team was impacted by the loss of Kristaps Porzingis in Game 1 against Knicks.

After returning from foot surgery at the beginning of the year, Porzingis’ return has had mixed results. Despite being fairly efficient when he played, the starting five with Horford has flourished with a +17.7 net rating in the regular season — that’s the highest efficiency of any fivesome with over 250 minutes played.