Djokovic loses 5-set marathon in US Open shocker

Novak Djokovic, 39, suffered a shocking first-round exit at the US Open on Sunday, losing to Mariano Navone 7-6 (5), 5-7, 4-6, 6-2, 6-1 in a match lasting 4 hours and 36 minutes. It marked the first time Djokovic had ever lost in the first round at the US Open and his earliest Grand Slam exit in two decades, since the 2006 Australian Open. The 24-time major champion visibly struggled with physical ailments during the match, including vomiting and cramping.