Novak Djokovic rolled back the years to defeat French Open and US Open champion Alexander Zverev 4-6 6-4 6-4 to reach the semi-finals of the China Open on Sunday.
Source: [Sky Sports](https://www.skysports.com/tennis/news/12040/13594880/china-open-novak-djokovic-keeps-unblemished-record-in-beijing-by-handing-alexander-zverev-a-rare-defeat)