It seems to sit comfortably on the amiable Serb's head and Federer must now look beyond Rafael Nadal when he is searching for danger.
Djokovic certainly provides that.
While not quite kryptonite to Federer's super-powers, Djokovic's game does cause the Swiss problems.
His victory over Federer was no fluke. It was as hard-earned as it was comprehensive.
Not since Federer lost to Gustavo Kuerten in the 2004 French Open had he been beaten in straight sets at a Grand Slam.
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