Celtics win record-breaking 18th NBA title with Game 5 victory over Mavericks

The Celtics defeated the Dallas Mavericks 106-88 on home court at Boston's TD Garden on Monday, securing the franchise's record-breaking 18th NBA title.

Celtics win record-breaking 18th NBA title with Game 5 victory over Mavericks
A men's basketball team celebrates as one player raises a championship trophy.

The Celtics defeated the Dallas Mavericks 106-88 on home court at Boston's TD Garden on Monday, securing the franchise's record-breaking 18th NBA title.