Tennis News : Keys dumps top seed Sabalenka out to reach quarter-finals in Berlin

Top-seeded Aryna Sabalenka was dumped out of the German Open in three sets by Madison Keys on Wednesday. Keys secured a 6-4, 1-6, 7-5 win to set-up a quarter-final against the winner of the all-Russian match between Ludmilla Samsonova and Veronika Kudermetova.