Defending champion Alexander Zverev, fresh from his victory over World No. 1 Rafael Nadal, and Greek star Stefanos Tsitsipas went into their second Round Robin match with hopes of booking a place in the semi-finals - watch all the highlights from the O2 Arena in London.
Stefanos Tsitsipas v Alexander Zverev Highlights
Match Highlights
London
2019RRRR
Defending champion Alexander Zverev, fresh from his victory over World No. 1 Rafael Nadal, and Greek star Stefanos Tsitsipas went into their second Round Robin match with hopes of booking a place in the semi-finals - watch all the highlights from the O2 Arena in London.
