Kontaveit upsets Kenin 7-5, 6-4 to reach Stuttgart quarters

<p>STUTTGART, Germany &mdash; Anett Kontaveit upset fourth-ranked Sofia Kenin 7-5, 6-4 on Wednesday to reach the Porsche Grand Prix quarterfinals.</p>
<p>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. </p>
<p>The American fended off nine break points until Kontaveit converted her 10th to win the first set, while errors cost Kenin the second.</p>
<p>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.</p>
<p>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.</p>
<p>Pliskova will next face Jelena Ostapenko, who defeated Swiss qualifier Stefanie Voegele 6-4, 7-5.</p>
<p>Two-time champion Angelique Kerber eased past Ekaterine Gorgodze 6-2, 6-2 to book a second-round meeting against Elina Svitolina.</p>
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