Hayward jumped in an effort to catch a pass from a team-mate when he came down on his ankle on Tuesday.
The 27-year-old was taken off the court on a stretcher, with the Celtics later confirming an ankle fracture.
Hayward was picked up in free agency this offseason by the Celtics.
He signed a four-year, $127million contract. Hayward had two points and a rebound at the time of his injury.
#NEBHInjuryReport: After a medical evaluation by Celtics/Cavs medical personnel Gordon Hayward has been diagnosed w/ a fractured left ankle.
— Boston Celtics (@celtics) October 18, 2017
Source:
Wires