Tennis-Sabalenka knocked out of Stuttgart Open by Vondrousova, Swiatek into semis
(Reuters) -World number two Aryna Sabalenka's hopes of reaching a fourth consecutive Stuttgart Open final ended after a 3-6 6-3 7-5 quarter-final defeat by Marketa Vondrousova on Friday, while champion Iga Swiatek maintained her perfect record at the event.