Photo: Boston Celtics/Twitter

Jimmy Butler scored 35 points and the Miami Heat rallied in the second half to beat the Boston Celtics 123-116 in Game 1 of the Eastern Conference finals on Wednesday night.

Despite their deep postseason run so far, the Celtics haven’t done a great job taking care of their home court, and Wednesday’s opener was no exception.

“We came out too cool … It’s the Eastern Conference Finals, like come on we gotta play with more intensity,” Celtics star Jaylen Brown (22 points) said after Boston dropped Game 1 to Miami.

Game 2 is Friday in Boston.