LeBron James always soars in the NBA playoffs. Mo Williams finally rose to the occasion—literally. Williams delivered his first dunk for Cleveland, a resounding slam that stunned Boston’s Paul Pierce, shook the arena and ignited the Cavaliers, who rallied for a 101-93 victory over the Celtics on Saturday night after being outplayed for much of Game 1 of the Eastern Conference semifinals. Williams’ unexpected dunk over Pierce fueled a game-ending 43-24 spurt by the Cavs. “I knew Mo could dunk,” James said of his teammate, generously listed as 6-foot-1. “I told Mo a long time ago if he ever dunked in a game it was going to spark us like we haven’t been sparked before. Not only did it fire the team, it fired himself up.” Hours before receiving his second straight MVP award, James scored 35 points and Williams added 20, 14 in the third quarter. http://sports.yahoo.com/nba/recap;_ylt=Ai2wPhFOiESOGGpMh8fNtHi8vLYF?gid=2010050105