Anna Tatishvili of Georgia upset third-seeded Tsvetana Pironkova of Bulgaria 1-6, 6-3, 6-1 Monday in the first round of the Budapest Grand Prix.
Pironkova broke twice to comfortably win the first set before Tatishvili turned the match around. The 81st-ranked Georgian took a 4-1 lead in the second set and then broke three times in the third to clinch the match.
Seventh-seeded Shahar Peer of Israel was also eliminated after losing 6-4, 6-3 to Aleksandra Wozniak of Canada.
Fourth-seeded Klara Zakopalova of the Czech Republic beat Anne Keothavong of Britain 7-6 (3), 3-6, 6-2, while No. 5 Marina Erakovic of New Zealand ousted Pauline Parmentier of France 7-6 (3), 3-6, 7-6 (2).
American Varvara Lepchenko had to retire with a right ankle injury when trailing 5-0 in the first set against Russia's Elena Vesnina.