There is "real doubt" surrounding whether Kristaps Porzingis will be able to return in the NBA Finals, according to Adrian Wojnarowski of ESPN.

Porzingis missed Game 3 due to a torn medial retinaculum allowing dislocation of the posterior tibialis tendon.

"There is real doubt about Kristaps Porzingis, his availability the rest of this series. It was the Celtics medical staff that ruled him out ... despite the fact that he wanted to push through and try to participate in Game 3," said Wojnarowski.

The Celtics have a 3-0 lead over the Mavs.