Stuttgart Open: Aryna Sabalenka Downs Barbora Krejcikova, Coco Gauff Sinks Veronika Kudermetova Sabalenka saw off her 12th-ranked Czech rival 6-2, 6-3 in just 75 minutes to reach the quarter-finals, while 19-year-old American Gauff beat Russian Kudermetova 6-2, 4-6, 7-6 (7/3)
