Ailing Novak Djokovic falls in US Open first round for earliest grand slam exit in 20 years

Mariano Navone wins 7-6 (7-5), 5-7, 4-6, 6-2, 6-1 to end Serbs hopesDjokovic vomits numerous times and has to fight off crampsThe first night session of the US Open this year was approaching the three-hour mark when Novak Djokovic walked briskly to the corner of the vast Arthur Ashe Stadium court, bent down and vomited the contents of his stomach straight into the towel bin.This was neither the first nor the last time that Djokovic threw up during an excruciating four hours and 36 minutes of suf...