Rondo is the X-factor for the Celtics. He is the individual that makes them dangerous when they play Miami. The level of his play determines the quality of the game for the Celtics, making them either look like a true contender or a pretender.
With Rondo not at his best, the Celtics have a hard time putting up a serious fight against the Heat. Even when Rondo plays fairly well, as he did in Game 2, the Celtics can look overmatched. Rondo alone can't beat the Heat, but a subpar Rondo spells disaster for Boston.
Here are the five things that give Rondo a large hand in the outcome of games played between the Celtics and Heat.