Defending champion Alexander Zverev has yet to fear for progress at the ATP finals in London. The 22-year-old defeated after his impressive opening win against Rafael Nadal on Wednesday night Greek striker Stefanos Tsitsipas 3: 6, 2: 6, thus missing the premature entry into the semi-finals. In the final preliminary round duel on Friday against Daniil Medvedev holds the Germans, however, all Trumps in the hand.
A victory over the Russians would guarantee Zverev the qualification for the knockout round, even with another defeat this is theoretically possible. Tsitsipas, meanwhile, is already a semifinalist, but with his final match against Nadal still has influence on the outcome of the group "Andre Agassi" .Nadal had turned away in the afternoon with a spectacular comeback a preliminary round-at least temporarily. The Spaniard defeated in a rematch of the US Open Finals Medvedev 6: 7 (3: 7), 6: 3, 7: 6 (7: 4). In the third set, he had fended off a match point at the score of 1: 5. Zverev and the one year younger Tsitsipas, the two youngest players in the tournament, had initially delivered a duel at eye level in the o2 arena. While Zverev convinced especially with his serve and good return game, Tsitsipas shone with his wealth of variants. At the score of 3: 4 Zverev conceded the first break, had to accept the sentence loss a little later. In the second round, Tsitsipas, who had won the last three duels with Zverev, took off the Hamburg native right at the start of the service. With another break to 4: 1, he expanded his leadership and was allowed to cheer for 1:13 hours.