Brad Stevens shed some light on the mysterious illness that plagued Kristaps Porzingis during the Celtics' playoff loss to the New York Knicks.

After looking like a shell of his All-Star self during the semifinals loss to the Knicks, Kristaps Porzingis finally has a diagnosis for the sickness that hampered him since March. Celtics president of basketball operations Brad Stevens said in his post-season media availability that Porzingis was dealing with “post-viral syndrome,

Boston president Brad Stevens spoke about Porzingis and the big man’s illness at his end-of-season media availability Monday. He offered up an optimistic view where resting up should help Porzingis get over the illness. Stevens added Porzingis’ issues came “out of the blue” as he wasn’t 100% against New York.