Novak Djokovic’s winning streak was halted at 19 matches as the home crowd favourite, Jannik Sinner, was roared to a superb 7-5, 6-7 (5), 7-6 (2) victory by a partisan ATP Finals crowd in Turin. After more than three hours of an absorbing toe-to-toe battle in which neither player took a backward step, it was world No 4 Sinner who seized his chance in the deciding set tie-break to crack Djokovic’s resistance. Sinner, 14 years Djokovic’s junior, wrapped up his first career win against the 24-time grand slam champion with a smash.