WTA roundup: Ekaterina Alexandrova knocks off Mirra Andreeva in Stuttgart

Ekaterina Alexandrova upset fellow Russian and No. 6 seed Mirra Andreeva 6-3, 6-2 in 65 minutes to reach the Porsche Tennis Grand Prix quarterfinals on Thursday in Stuttgart, Germany.

Alexandrova, 30, recorded her fourth Top 10 win of the season. She had 19 winners and eight aces while the 17-year-old Andreeva struggled with 24 unforced errors and landed only 48 percent of her first serves.

Fourth-seeded Coco Gauff sailed past Germany's Ella Seidel 6-1, 6-1 in 57 minutes. Top seed Aryna Sabalenka of Belarus won in a walkover due to an injury to Russia's Anastasia Potapova. American Jessica Pegula, the third seed, downed Poland's Magdalena Frech 6-1, 6-1 in 59 minutes. Fifth-seeded Jasmine Paolini of Italy defeated Germany's Jule Niemeier 6-1, 7-5 in one hour, 26 minutes.

Open Capfinances Rouen Metropole

Suzan Lamens of the Netherlands knocked off second-seeded Linda Noskova of the Czech Republic 6-4, 6-1 to qualify for the quarterfinals in Rouen, France.

Lamens saved four of five break points, while Noskova saved six of 11. Lamens won 81.8 percent of first serve points (27 of 33); Noskova was at 56.8 percent (25 of 44).

In other matches, top seed Elina Svitolina downed fellow Ukrainian Anhelina Kalinina 6-4, 6-0. Third-seeded Olga Danilovic of Serbia went three sets to defeat Czech Linda Fruhvirtova 6-2, 3-6, 6-4, and fifth-seeded Moyuka Uchijima of Japan rallied for a 1-6, 7-6 (4), 6-4 win over France's Lois Boisson.

--Field Level Media