4. Pierce needs to score
Back in 2008, Paul Pierce was the Celtics' best player. Kevin Garnett got the defensive accolades, but it was Pierce who effectively guarded LeBron James and Kobe Bryant and walked away with Finals MVP. Those defensive expectations may be unrealistic now (though Pierce is still an underrated defender), but the Celtics still need him to be a scorer. If the Hawks are going to buckle down on defense, the Celtics need someone who can break the game down one-on-one. With Ray Allen slowed by injury, Pierce's scoring will be crucial.