Dominic Thiem kept alive his slim chances of qualifying for the semi-finals of the ATP Finals with a 6-1 6-4 victory over Kei Nishikori at London's O2 Arena.
Dominic Thiem kept alive his slim chances of qualifying for the semi-finals of the ATP Finals with a 6-1 6-4 victory over Kei Nishikori at London's O2 Arena.