Boston Celtics star Kristaps Porzingis is day-to-day with an illness, coach Joe Mazzulla told reporters on Tuesday. It's unclear if Porzingis, who did not play in the second half of the team's stunning Game 1 loss to the New York Knicks, will be ready for Game 2 on Wednesday.

The Celtics were without Kristaps Porzingis for most of Game 1 as the big man was forced to leave due to an illness.

Celtics coach Joe Mazzulla said Kristaps Porzingis has been dealing with an on and off illness since he returned to action in March.