Zverev seals semi-final spot, Nadal out despite win

Tennis - ATP Finals - The O2, London, Britain - November 15, 2019 Germany's Alexander Zverev celebrates after winning his group stage match against Russia's Daniil Medvedev Action Images via Reuters/Tony O'Brien

LONDON (Reuters) - Defending champion Alexander Zverev reached the last four at the ATP Finals with a 6-4 7-6(4) defeat of Russian debutant Daniil Medvedev on Friday and consigned Rafael Nadal to an early exit at the same time.

The 22-year-old German served superbly throughout and held his nerve in the second-set tiebreak to notch a second group victory to claim second spot ahead of world number one Nadal.