Can the Celtics win 50 games?

Can Brad Stevens lead the deep and young Celtics to the No. 2 seed in the East this season? Brian Babineau/NBAE/Getty Images

ESPN Insider Kevin Pelton and real plus-minus developer Jeremias Engelmann discuss expectations for the Boston Celtics, who are projected to compete for the second seed in the Eastern Conference. But do the Celtics have a star? What are the reasons for concern? Can they win 50 games and the Atlantic Division?