Novak Djokovic suffers a shocking first-round loss at the U.S. Open, marking his earliest exit in two decades.

The 39-year-old Djokovic hadn’t lost in the first round of a major since early in his career, in 2006.

TAMARA PRENN IN NEW YORK: Not since the 2006 Australian Open has the Serbian serial champion fallen at the first time of asking at a major