UPDATE: According to Tom Westerholm of MassLive.com, Hayward suffered a fractured ankle.

CLEVELAND -- The animosity toward Kyrie Irving at Quicken Loans Arena on Tuesday night quickly turned to shock when Boston Celtics forward Gordon Hayward suffered a graphic leg injury following a fall in the first quarter.

Play between the Celtics and Cleveland Cavaliers was halted for several minutes as a stretcher was brought to the court to assist Hayward. Several players on both Boston and Cleveland appeared stunned by the injury, with many wishing him well as he was wheeled off the floor.

One of the biggest free agents of the NBA offseason, Hayward signed with the Celtics after seven seasons with the Utah Jazz. Last season, the Butler product earned All-Star honors while averaging 21.9 points and 5.4 rebounds per game.

Alongside Irving, Hayward was projected to help the Celtics threaten the Cavs' Eastern Conference supremacy. His future for this season, however, now appears very much in doubt.