Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers center Dario Saric (9) drives against Boston Celtics forward Jayson Tatum (0) during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics guard Gordon Hayward (20) battles with Philadelphia 76ers point guard Ben Simmons (25) for a loose ball during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics guard Jaylen Brown (7) is guarded by Philadelphia 76ers center Dario Saric (9) during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers guard Markelle Fultz (20) drives between Boston Celtics forward Jayson Tatum (0) and guard Gordon Hayward (20) during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers center Joel Embiid (21) is guarded by Boston Celtics center Al Horford (42) during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Shoes worn by Boston Celtics guard Jaylen Brown (not pictured) during the first half against the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers head coach Brett Brown reacts on the side line during the first half against the Boston Celtics at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers center Joel Embiid (21) drives past Boston Celtics center Aron Baynes (46) during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Shoes worn by Boston Celtics guard Terry Rozier (not pictured) during the first half against the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Green shirts cover the chairs before the game between the Boston Celtics and the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Pyrotechnics explode above the floor during the pregame festivities before the game between the Boston Celtics and the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics center Al Horford (42) is guarded by Philadelphia 76ers forward Robert Covington (33) during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Pyrotechnics explode above the floor during the pregame festivities before the game between the Boston Celtics and the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics guard Kyrie Irving (11) and forward Marcus Morris (13) jump during introductions before the game against the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Shoes worn by Boston Celtics guard Marcus Smart (not pictured) during the first half against the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers center Dario Saric (9) and Boston Celtics forward Jayson Tatum (0) battle for the ball during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers center Dario Saric (9) and Boston Celtics forward Jayson Tatum (0) battle for the ball during the first half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Shoes worn by Boston Celtics guard Marcus Smart (not pictured) during the first half against the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics center Al Horford (42) reacts after a three point play during the second half against the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics center Al Horford (42) reacts after a three point play during the second half against the Philadelphia 76ers at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers center Joel Embiid (21) and forward Robert Covington (33) react during the second half against the Boston Celtics at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics guard Gordon Hayward (20) drives past Philadelphia 76ers center Joel Embiid (21) during the second half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics guard Gordon Hayward (20) puts up a shot while guarded by Philadelphia 76ers guard JJ Redick (17) during the second half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Philadelphia 76ers center Joel Embiid (21) sits on the bench in the final seconds of the game against the Boston Celtics at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports

Oct 16, 2018; Boston, MA, USA; Boston Celtics guard Kyrie Irving (11) drives between Philadelphia 76ers center Joel Embiid (21) and forward Robert Covington (33) during the second half at TD Garden. Mandatory Credit: Greg M. Cooper-USA TODAY Sports