PORTOROZ, Slovenia (AP)—Top-seeded Jelena Jankovic beat Bojana Jovanovski 6-3, 6-3 Tuesday in an all-Serbian match in the first round at the Slovenia Open.

Jankovic will face Belarus qualifier Anastasiya Yakimova, who rallied to defeat Masa Zec Peskaric of Slovenia 3-6, 6-2, 6-3.

Stefanie Voegele upset second-seeded Petra Kvitova of the Czech Republic 7-5, 6-2. The Swiss next plays Tamira Paszek of Austria, who won the tournament on her only previous appearance here in 2006 but is a wild card this year.

Eighth-seeded Sofia Arvidsson was also beaten in an upset, losing 7-6 (1), 6-2 to Johanna Larsson in an all-Swedish match. While Ksenia Pervak of Russia knocked out fifth-seeded Dominika Cibulkova of Slovakia 6-1, 6-3.

Anastasia Pavlyuchenkova of Russia, Sara Errani of Italy and Polona Hercog of Slovenia all advanced to the second round.