BRUSSELS — Laura Siegemund of Germany defeated Kirsten Flipkens of Belgium 7-6 (2), 6-1 on Thursday to reach the quarterfinal of the Luxembourg Open.
Siegemund only qualified for the main draw as a 'lucky loser' in qualifying, and advanced to the second round when top seed Timea Bacsinszky of Switzerland pulled out injured during their first-round encounter late Wednesday.
In Friday's quarterfinal, Siegemund will play another Swiss, Stefanie Voegele, who defeated Anna-Lena Friedsam of Germany, 6-3, 7-6 (4).
Seventh-seeded Barbora Strycova of Czech Republic beat Johanna Larsson of Sweden 6-2, 7-5.