Novak Djokovic fell at the first hurdle as his tilt at a record-breaking 25th Grand Slam came to a shock end to Argentine Mariano Navone in a five-set epic at the US Open.
Source: [Sky Sports](https://www.skysports.com/tennis/news/12040/13579310/us-open-novak-djokovic-loses-to-mariano-navone-in-longest-first-round-match-of-his-career-in-grand-slams)