Distraught Novak Djokovic confesses to 'serious' health issue as US Open stunned overnight

Novak Djokovic was beaten in the first round of the US Open by Mariano Navone after a gruelling five-set match lasting nearly five hours, with the 24-time grand slam champion admitting to a 'serious' ongoing health problem

"Maybe this is the 25th major. Maybe this is the set of circumstances he’s been waiting for," one commentator told The Post.