Kevin Love left Game 4 between the Cleveland Cavaliers and Boston Celtics on Sunday afternoon with a shoulder injury. He was ruled out for returning later in the game.

The injury occurred when Love got tangled up with Celtics’ big man Kelly Olynyk. Love appeared to have dislocated his shoulder and ran off the court.

It’s unknown how the injury will affect Love for the rest of the playoffs, but he’s been a major part of Cleveland’s 3-0 series lead over Boston. He scored 23 points in Game 3, and the Cavaliers have been much better with the forward on the court, outscoring the Celtics by 27 points when Love has been on the floor. With Love on the bench in the first three games, Cleveland outscored Boston by just two points.

Love averaged 16.4 points and 9.7 rebounds per game in the regular season.