Celtics general manager Brad Stevens announced the next step for Porzingis during his end-of-season presser on Monday, via The Athletic's Jay King. "Brad Stevens said the way Kristaps Porzingis’ illness was described to him was as 'post-viral syndrome,'" he reported. "Said playoff basketball was not conducive to helping him feel better."

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.