Grodon Hayward fractured and dislocated his left tibia. He was coming down from a layup and landed awkward.  He fell and his leg messed up and he couldn't get up or move his leg. This was the Boston Celtics first game of the season. They were against the Cleveland  Cavaliers and it happened 6 minutes in the game. He probably won't be able to play the rest of the season this year according to his agent.