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

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.

Boston Celtics star big man Kristaps Porzingis played limited minutes throughout the team's second-round series with the New York Knicks. He only exceeded 20 minutes once in six games before the Knicks eliminated the Celtics Friday in a dominant 119-81 win.