Djokovic, Federer bow out in Shanghai as 'Next Gen' stars roar into semis
Sixth seed Tsitsipas battled back from a set down to defeat top seed Djokovic 3-6 7-5 6-3 to register his first victory over a reigning world number one.
Sixth seed Tsitsipas battled back from a set down to defeat top seed Djokovic 3-6 7-5 6-3 to register his first victory over a reigning world number one.