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The man who has become Djokovic's newest rival, Andy Murray, helped usher in a great 2012 tennis calendar year. Djokovic and Murray battled for five sets in the semifinals in a not so brisk four hours, 50 minutes.
Two days later, Rafael Nadal and Djokovic gave the Melbourne crowd its price of admission and then some, as the two battled for a record five hours, 53 minutes.
Australia's winter is the equivalent of American summer. It's reasonable to assume that the heat and effort put forth left Djokovic exhausted for days after his spectacular victory.
He deserved any and every minute of relaxation he took after the tournament. It was his greatest victory in one of the most spectacular tennis careers we have seen in recent decades.