Jayson Tatum appears to be in good spirits after undergoing surgery on his ruptured Achilles, giving fans a thumbs up in his first social media post since Monday's devastating injury.

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.