Oct. 24—BRADFORD — Imagine being a long-time Boston Celtics fan, for more than five decades, going back to John Havlicek, Dave Cowens and JoJo White, then Larry Bird, Kevin McHale and Robert Parish. Imagine the Boston Celtics playing the Los Angeles Lakers, which they do next month in Boston, on Nov. 17. Imagine planning a few potential matchups for LeBron James against the Celtics that night. ...