It started with a two-seed drop in the Eastern Conference, falling from first to third in the conference in the final weeks of the season. After the dismantlement of Carmelo Anthony and the new-look New York Knicks in a 4-0 sweep in the first round, the Celtics would find themselves out-matched by the explosive offense of the Miami Heat.
It was a season of disappointment, as next season might be the last season that the Big Three - Paul Pierce, Ray Allen and Kevin Garnett - will be playing together with the Boston Celtics.
Going into the off-season, Rondo and the Big Three all have different areas in which they need to spend time working on to better their games for the 2011-2012 season.
Here is the specific area that each of the five Celtics players - those which are returning for the 2011-2012 season - need to improve upon going into next season.