Paris, France (SportsNetwork.com) - Fourth-seeded Petra Kvitova and fifth seed Carolina Wozniacki notched opening-round wins Tuesday at the 2015 French Open.

The Wimbledon champion and recent Madrid titlist Kvitova gutted out a 6-4, 3-6, 6-4 win over New Zealand's Marina Erakovic, while the U.S. Open runner-up Wozniacki waltzed past last week's Nurnberg clay-court champ Karin Knapp of Italy 6-3, 6-0.

Meanwhile, 10th-seeded German Andrea Petkovic whipped American Shelby Rogers 6-2, 6-1 and 18th-seeded Russian Svetlana Kuznetsova held off Dutchwoman Kiki Bertens 6-1, 4-6, 6-2. The two-time Grand Slam winner Kuznetsova was the French Open champion in 2009 and runner-up in 2006.

Bulgaria's Sesil Karatantcheva posted an upset by taking out 25th-seeded former world No. 1 Jelena Jankovic 6-3, 6-4. The former U.S. Open runner-up Jankovic is a three-time French Open semifinalist, but hasn't reached the final four here since 2010.

Also on Day 3, 23rd-seeded rising Swiss Timea Bacsinszky handled Spaniard Lara Arruabarrena 6-3, 6-4 and 32nd-seeded Zarina Diyas of Kazakhstan doused German Dinah Pfizenmaier 6-4, 6-1.