The St. Louis native went down late in the game with a non-contact injury that had him writing on the ground in pain.

The Celtics blew a 14-point lead, then lost their best player to injury in a Game 4 loss to the Knicks that pushed Boston to the brink of elimination.

Tatum suffered what appeared to be a serious lower leg injury late in the fourth quarter. He writhed in pain on the court, had to be carried off by Celtics staffers and was seen on ESPN’s broadcast riding in a wheelchair after exiting down the tunnel.