LONDON, November 22 (Reuters): Rafa Nadal's dream of a first ATP Finals title and Novak Djokovic's quest for a record-equalling sixth vanished in defeats by Daniil Medvedev and Dominic Thiem in two seismic semi-finals on Saturday. As the curtain comes down on London's 12 years as host of the ATP Tour's prestigious season-ender, it would have been fitting for Nadal and Djokovic to face off for the 57th time in their glittering careers. But times are a changing

LONDON, November 20 (Reuters): 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