Mavs guard Kyrie Irving and Boston big man Kristaps Porzingis find themselves facing off against their former teams. Interesting story, but we like the Mavs to hang tough here. Yes Porzingis is back, but will that disrupt some of Boston's chemistry? Possibly. Also Boston relies heavily on the 3-Point shot and big breaks like this can sometimes do more damage than good. We think the Mavs stay inside the number in Game 1.