Djokovic fights back to beat Zverev and reach Beijing semi-finals

Novak Djokovic beat top seed and world No 2 Alexander Zverev 4-6, 6-4, 6-4 to reach the China Open semi-finals in Beijing. Zverev, helped by the seeding that keeps top players apart early, took the opener. Djokovic held firm through the long rallies that followed. No panic. He took the next two.