Questions abound for Novak Djokovic after US Open loss and 3 years without a Grand Slam title

发生了什么

Novak Djokovic waved goodbye, made a heart shape with his hands and blew kisses to the crowd as he walked off the court inside Arthur Ashe Stadium to a standing ovation. Back down on the court, Djokovic had his two black bags — one containing his rackets and the other more equipment — hanging from his shoulders. After his first-round loss to Mariano Navone at the U.S. Open on Sunday night, it remains to be seen whet…

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