Dhaka, Nov. 22 -- London's farewell edition of the ATP Finals could still have its dream climax after world number one Novak Djokovic beat Alexander Zverev 6-3, 7-6(4) to seal a last-four spot on Friday.

Defeat by Russian Daniil Medvedev had left the five-time champion needing to beat Germany's Zverev to avoid a group stage exit and he obliged with a relatively comfortable win.

Djokovic will finish second in the Tokyo Group, named after the first edition of the season-ending tournament 50 years ago, and with Spanish world number two Rafa Nadal finishing second in the London Group, they have avoided a semi-final clash.

Not that a 57th career meeting is a formality, far from it.

The 33-year-old Serb will face US Open champion Dominic Th...