Hayward appeared to be pointing to the middle or ring finger area on the hand as he was removed from the game, tweets Chris Forsberg of NBC Sports Boston. An X-ray in the locker room confirmed the fracture.
Hayward will see a specialist Monday to determine if he will need surgery, agent Mark Bartelstein of Priority Sports tells ESPN’s Adrian Wojnarowski (Twitter link). The operation would take place Monday if doctors decide it’s necessary, but a timeline for him to return won’t be set until that ruling is made.
Hayward is off to a strong start this year and appeared to be fully healthy for the first time since fracturing his ankle on opening night of the 2017/18 season. He averaged 20.3 points, 7.9 rebounds and 4.6 assists through the first seven games as the Celtics rose to the top of the East with a 6-1 start.