Third seed Alexander Zverev and fifth seed Marin Cilic went head-to-head in the opening singles match of the Gustavo Kuerten Group at the Nitto ATP Finals - watch all the action from the O2 Arena in London.
Alexander Zverev v Marin Cilic
Replay
London
2018RRRR
Third seed Alexander Zverev and fifth seed Marin Cilic went head-to-head in the opening singles match of the Gustavo Kuerten Group at the Nitto ATP Finals - watch all the action from the O2 Arena in London.
