The Boston Celtics, one win away from sweeping the NBA Finals, insist they won't get overconfident.
They only need to look back at the fourth quarter of Game 3 to see how dangerous the Dallas Mavericks can be.
Jayson Tatum poured in 31 points and Jaylen Brown supplied 30 as the Celtics held off a late rally by the Mavericks for a 106-99 victory on Wednesday.