The Dallas Mavericks failed to pick up a win in Game One of the NBA Finals. Dallas lost to the Boston Celtics 107-89 to open the series at TD Garden. The Mavs trailed by as many as 29 in the disappointing effort. Luka Doncic had 30 points and 10 rebounds, but was limited to just one assist in the losing effort. P.J. Washington chipped in with 14 points, while Kyrie Irving finished with 12. The two teams return to the court for Game Two on Sunday.