The Boston Celtics aim to take a 2-0 lead in the NBA Finals against the Dallas Mavericks after a commanding 107-89 victory in Game 1. The performance of Luka Doncic and Kristaps Porzingis will be key in determining the outcome. Watch Game 2 on Sunday, June 9, at 8 p.m. ET. Broadcast on ABC and streaming options are available.