Doncic scores 29, Mavericks roll past the Celtics 122-84 to avoid a sweep in the NBA Finals

Luka Doncic scored 25 of his 29 points in the first half, Kyrie Irving added 21 points and the Dallas Mavericks emphatically extended their season on Friday night, fending off elimination by beating the Boston Celtics 122-84 in Game 4 of the NBA Finals