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.

NEW YORK — Kristaps Porzingis gave the Celtics what he had in their season-ending Game 6 loss to the Knicks on Friday night. However, his production remained hampered yet again by an illness that has impacted him all offseason.