Saturday
At Porsche-Arena
Stuttgart, Germany
Purse: $731,000 (Premier)
Surface: Clay-Indoor
Singles
Semifinals
Caroline Wozniacki (4), Denmark, def. Simona Halep (2), Romania, 7-5, 5-7, 6-2.
Angelique Kerber, Germany, def. Madison Brengle, United States, 6-3, 6-1.
Doubles
Semifinals
Bethanie Mattek-Sands, United States, and Lucie Safarova (3), Czech Republic, def. Petra Martic, Croatia, and Stephanie Vogt, Liechtenstein, 4-6, 6-3, 10-0.
Caroline Garcia, France, and Katarina Srebotnik (2), Slovenia, def. Arantxa Parra Santonja, Spain, and Alicia Rosolska, Poland, 6-3, 6-1.