Watch: Djokovic in tears during his first-round US Open defeat to Navone

Novak Djokovic was knocked retired successful the archetypal circular of the US Open by Mariano Navone successful a four-hour, 36-minute five-set battle. The 39-year-old struggled with carnal issues, including cramps and backmost pain, portion making 70 unforced errors. Djokovic besides became affectional during the match, with tears highlighting the vexation of a achy decision and uncertain Grand Slam future.