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

Beyond All-Stars Jayson Tatum and Jaylen Brown each forgetting to shoot for a half, center Kristaps Porzingis' health has been a major issue in this series against New York. Per Zack Cox of The Boston Herald,

BOSTON (AP) — Celtics center Kristaps Porzingis didn’t play in the second half of Boston’s 108-105 overtime loss to the New York Knicks in Game 1 of the Eastern Conference semifinals because of an illness. Porzingis wasn’t on the floor initially with the team Monday night as they warmed up prior to the start of the second half.