BOSTON, MASSACHUSETTS – DECEMBER 12: Head Coach Brett Brown of the Philadelphia 76ers looks on during the game against the Boston Celtics at TD Garden on December 12, 2019 in Boston, Massachusetts. The 76ers defeat the Celtics 115-109. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images)