ATP Finals: Tsitsipas Beats Medvedev, Nadal Gears Up For Opener12Photo© firstpost.com

ATP Finals: Tsitsipas Beats Medvedev, Nadal Gears Up For Opener

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London: Rafael Nadal refused to make excuses after being outplayed by defending champion Alexander Zverev at the ATP Finals on Monday as Stefanos Tsitsipas got his campaign off to a flying start.

The Spanish top seed, who has never won the season-ending event, came into the tournament at London's O2 Arena under an injury cloud and was well short of his imperious best as he went down 6-2, 6-4.

In the earlier round-robin match in Group Andre Agassi, sixth seed Tsitsipas beat Daniil Medvedev 7-6 (7/5), 6-4, admitting their spiky relationship had made his job tougher.