Results of WTA Luxembourg

Following are Thursday's results from the fourth day of the WTA Luxembourg Open, according to Xinhua.

Second round:

((prefix number denotes seeding))

1-Caroline Wozniacki, Denmark, bt Monica Niculescu, Romania, 6- 3, 6-2

4-Sabine Lisicki, Germany, bt Tereza Smitkova, Czech Republic, 6-4, 6-0

Karin Knapp, Italy, bt Andrea Petkovic, Germany, 7-5, 7-5

Stefanie Voegele, Switzerland, bt Karolina Pliskova, Czech Republic, 6-1, 3-6, 6-3

2-Sloane Stephens, United States, bt Yvonne Meusburger, Austria, 7-5, 6-4