Based on how the Boston Celtics’ roster is currently assembled, they need to be greater than the sum of their parts in order to succeed. The Celtics undeniably lack star power right now. According to ESPN’s preseason rankings of the league’s top 400 players, Isaiah Thomas is Boston’s best player at 65th overall. Only the Nuggets, Lakers and Sixers have their top player ranked lower. Yet through 13 games, Boston boasts a statistically elite defense thanks to coach Brad Stevens and
