Steffi Graf

Mariano Navone knocks Novak Djokovic out of US Open in four-hour first-round match

Mariano Navone defeated Novak Djokovic 7-6 (7-5), 5-7, 4-6, 6-2, 6-1 in the first round of the US Open in New York, ending the 24-time Grand Slam champion's 78-match opening-round winning streak.