Former world No. 1s Caroline Wozniacki and Jelena Jankovic were among the second-round winners Thursday at the e-Boks Open.

The top-seeded Wozniacki needed just 67 minutes to dispose of Pauline Parmentier of France, 6-2, 6-1, while the third-seeded Jankovic had little trouble in a 6-3, 6-1 rout of Russian wild card Yulia Putintseva.

Wozniacki, who grew up in nearby Odense, improved to 12-0 all-time at her home event. She won the title in 2010 and 2011, and will next meet another Frenchwoman in Alize Cornet, who advanced to the quarterfinals on Wednesday.

Jankovic entered this week's event on a four-match losing streak, dropping each of her first matches in Charleston, Miami and Indian Wells after a semifinal loss at the Malaysian Open. The Serb will next take on fifth-seeded Kaia Kanepi, who reached the quarterfinals on Wednesday.

Second-seeded Angelique Kerber also won Thursday, rallying for a 4-6, 6-3, 6-3 triumph against Britain's Anne Keothavong. She's needed three sets to win each of her first two matches this week and will face sixth-seeded German Mona Barthel in the quarters on Friday.

The only unseeded player to win Thursday was Serbia's Bojana Jovanovski, who knocked off fourth-seeded Monica Niculescu of Romania with a 6-7 (6-8), 6-4, 6-1 victory. She'll meet Croatia's Petra Martic in Friday's quarterfinals.

This week's champion will earn $37,000.