Djokovic ramps up Shanghai Masters title defence

Shanghai, China: Novak Djokovic rolled into the Shanghai Masters quarter-finals as the world number one made light work of American John Isner on Thursday.

The defending champion from Serbia dismissed the 16th seed 7-5, 6-3 in 74 minutes and plays upcoming Greek Stefanos Tsitsipas or Poland's Hubert Hurkacz in the last eight.

Roger Federer, the 20-time Grand Slam champion, faces 13th seed David Goffin of Belgium later Thursday.