What Happened to Novak Djokovic?

What Happens When a Winner Stops Winning?A year ago, Novak Djokovic was the defending champ in all four Grand Slams. Now, he’s getting dumped out of the French Open quarterfinals.(Getty Images/Ringer illustration)For Roger Federer and Rafa Nadal to be young again, the law of equivalent exchange says that Novak Djokovic’s gluten-free…
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