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In-form teenager Mirra Andreeva went out of the Stuttgart Open as she lost in straight sets to fellow Russian Ekaterina Alexandrova in the last 16.<\/b><\/p>\n
Sixth seed Andreeva, who has already won two titles this season, lost 6-3 6-2 against unseeded Alexandrova in just over an hour.<\/p>\n
Andreeva, 17, became the youngest champion at a WTA 1000 event in February by winning the Dubai Tennis Championships, before triumphing at Indian Wells in March.<\/p>\n
But she was unable to wrestle control of the match from Alexandrova, 30, who claimed her fourth win over a top-10 player this season.<\/p>\n
Alexandrova will play American third seed Jessica Pegula in the quarter-finals after she thrashed Poland’s Magdalena Frech 6-1 6-1.<\/p>\n
Italian fifth seed Jasmine Paolini beat unseeded German Jule Niemeier 6-1 7-5 to reach the last eight for the second successive year.<\/p>\n
She will play the winner of Thursday’s match between American fourth seed Coco Gauff and Germany’s Ella Seidel.<\/p>\n
Top seed Aryna Sabalenka will play Belgian Elise Mertens in the quarter-finals after Anastasia Potapova withdrew before their last-16 match with an injury.<\/p>\n
The final last-eight tie sees Polish second seed Iga Swiatek take on either American seventh seed Emma Navarro or Latvia’s Jelena Ostapenko, with the pair set to play later on Thursday.<\/p>\n<\/div>\n