By KYLE HIGHTOWER (AP Sports Writer) BOSTON (AP) — The Miami Heat were in need of a calming presence following a sluggish start to their latest conference finals showdown with the Boston Celtics. Jimmy Butler provided that and a lot more. Butler scored 35 points, including 20 after halftime, and the Heat rallied in the second half to beat the Celtics 123-116 in Game 1 of the Eastern Conference finals on Wednesday night. He said his teammates have given him confidence. “I’m playing at an incredible level because they are allowing me to do so,” Butler said.