Entering Game 6 at Madison Square Garden, Kristaps Porzingis was averaging 4.2 points, 3.4 rebounds and 0.8 blocks in 16.4 minutes per game.

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.

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