The Boston Celtics and the Philadelphia 76ers renewed their bitter rivalry as they faced off at TD Garden on Wednesday to start their respective campaigns.

The Celtics took the first quarter , 28-26, before the 76ers returned the favor in the second frame, 31-23, to go into the halftime break with a six-point lead, 57-51.

A scary moment also happened in the second quarter after Celtics forward Luka Garza was inadvertently hit in the head by the elbow of 76ers center Adem Bona during a rebound play. Garza fell to the ground and didn't get up for a few seconds.

According to The Athletic's Jay King, the 26-year-old forward has been placed under concussion protocol . Expand Tweet

Garza made his debut for the Celtics after signing a two-year contract worth $5.5 million in the offseaso

See Full Page