The Last Hurrah for a Legend? Novak Djokovic's shocking first round exit from the US Open has left fans and pundits wondering if this marks the beginning of the end for one of the all time greats.
For years, Djokovic has defied time and expectation, pushing himself to new heights even as he's entered his late 30s.
His recent performance at Wimbledon showed him still capable of dominating the best young talent in the sport.