BOSTON — LeBron James saw his share of disappointment in Boston when he was with the Cleveland Cavaliers.
    Then he joined the Miami Heat, and things only got worse.
    Miami has lost seven of eight on the parquet floor since James arrived to form a superteam modeled after the new Big Three that hung the Celtics' unprecedented 17th NBA championship banner.
    The Heat will need a victory in Game 6 of the Eastern Conference finals tonight to avoid a fourth straight loss to the Celtics, a fifth straight loss in Boston and a second straight year of failed promise from the trio of James, Dwayne Wade and Chris Bosh.
    "We plan to win the ballgame. We've got to win. That's all we've got to do," Wade said Wednesday before the Heat boarded a plane to return to Boston. "Can't listen to the noise. I'm not. I'm sure our team is not. We're just focused on winning this ballgame."
    It was in Boston that James said goodbye to Cleveland, ripping off his jersey as he left the court after Game 6 of the 2010 Eastern Conference semifinals after the Celtics spoiled the two-time defending NBA MVP's best chance to win a title with his hometown team.
    Miami has had even bigger struggles in Boston, winning just once on the parquet since Kevin Garnett, Paul Pierce and Ray Allen joined forces. The Celtics knocked the Heat out of the 2010 playoffs in the first round.