You could complain about the referees, the unjust Paul Pierce ejection, the 68-40 discrepancy in free throws and the missed calls. You can blame it on the Kendrick Perkins trade and its demolition of the team's chemistry, or Tom Thibodeau's departure from Doc Rivers' bench. If you've watched this Celtics team play for the past few years and have grown accustomed to championship runs, you have a long list of reasons to feel sour, but all are simply distractions to the cold, hard truth.
The Celtics, down 2-0 in a series for the first time of the Big Three era, are seeing their window as a championship contender close right before their eyes.
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