NBA playoffs: Celtics crush Heat to win series, Mavericks thrash Clippers

Read MoreBoston Celtics advance to semifinals with 4-1 win, Luka Doncic-led Dallas Mavericks take 3-2 lead over LA Clippers.Boston Celtics advance to semifinals with 4-1 win, Luka Doncic-led Dallas Mavericks take 3-2 lead over LA Clippers.