The Celtics' big man had dealt with an illness during the regular season, so it seemed that it lingered with him. It clearly impacted Porzingis while on the court, and he simply couldn't provide Boston with the production that the team needed. After Game 6, Porzingis addressed the illness, admitting that he wasn't even sure he knew what it was.

Kristaps Porzingis struggled in the Celtics' second-round loss to the Knicks as he battled a mysterious illness.

Boston Celtics head coach Joe Mazzulla has revealed whether the team will shut down star center Kristaps Porzingis.