Linz, Austria: Camila Giorgi of Italy upset last year's finalist Julia Goerges of Germany 6-2, 6-3 in the first round of the Generali Ladies on Tuesday.
The 105th-ranked Giorgi, who won three qualifying matches to reach the main draw, avoided break points and converted the second match point on her serve.
Giorgi next plays fifth-seeded Kirsten Flipkens of Belgium, who rallied to beat 17-year-old Donna Vekic of Croatia 2-6, 6-2, 6-2.
Also, seeded players Carla Suarez Navarro of Spain and Dominika Cibulkova of Slovakia reached the second round.
No. 4 Suarez Navarro defeated Kristyna Pliskova of Czech Republic 6-2, 6-3, and No. 7 Cibulkova came from behind to beat Annika Beck of Germany 3-6, 6-2, 6-1.