Anett Kontaveit upset fourth-ranked Sofia Kenin 7-5, 6-4 on Wednesday to reach the Porsche Grand Prix quarterfinals.
The 27th-ranked Kontaveit, who reached the final in the last edition of the tournament in 2019, claimed her 12th win against a top-12 opponent by beating Kenin in 94 minutes.
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Anett Kontaveit upset fourth-ranked Sofia Kenin 7-5, 6-4 on Wednesday to reach the Porsche Grand Prix quarterfinals.
Top-seeded Ashleigh Barty defeated home favorite Laura Siegemund 6-0, 7-5, and Marketa Vondrousova beat Czech compatriot Marie Bouzkova 6-1, 7-6.
Two-time champion Angelique Kerber eased past Ekaterine Gorgodze 6-2, 6-2 to book a second-round meeting against Elina Svitolina.
Laura Siegmund in action against Ashleigh Barty during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Ashleigh Barty in action against Laura Siegmund during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Laura Siegmund in action against Ashleigh Barty during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Laura Siegmund in action against Ashleigh Barty during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Ashleigh Barty in action against Laura Siegmund during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
The American fended off nine break points until Kontaveit converted her 10th to win the first set, while errors cost Kenin the second.
Sofia Kenin of USA in action against Anett Kontaveit of Estonia, during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Top-seeded Ashleigh Barty defeated home favorite Laura Siegemund 6-0, 7-5, and Marketa Vondrousova beat Czech compatriot Marie Bouzkova 6-1, 7-6.
Sixth-seeded Karolina Pliskova, the 2018 champion, won 7-5, 3-6, 6-3 against the 137th-ranked Tamara Korpatsch in their first-round match.
Pliskova will next face Jelena Ostapenko, who defeated Swiss qualifier Stefanie Voegele 6-4, 7-5.
Anett Kontaveit of Estonia, in action against Sofia Kenin of USA, during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Two-time champion Angelique Kerber eased past Ekaterine Gorgodze 6-2, 6-2 to book a second-round meeting against Elina Svitolina.
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Anett Kontaveit, right, wins in two sets against Sofia Kenin of USA, during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Laura Siegmund in action against Ashleigh Barty during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Ashleigh Barty in action against Laura Siegmund during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Laura Siegmund in action against Ashleigh Barty during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Laura Siegmund in action against Ashleigh Barty during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)
Ashleigh Barty in action against Laura Siegmund during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas KienzlePool via AP)