Wimbledon, England -- (Sports Network) - Venus Williams continued her quest to win a third consecutive Wimbledon title, as she cruised to a straight-set victory over Spaniard Carla Suarez Navarro in third-round play on Saturday, while big upsets came when French Open champion Svetlana Kuznetsova and U.S. Open runner-up Jelena Jankovic exited the women's draw.

The third-seeded Williams overpowered Suarez Navarro in the first set, then closed out the match strong, taking the final three games on the way to a 6-0, 6-4 win at the storied All England Club.

The seven-time major titlist Williams, who has won five Wimbledon singles titles this decade, also avenged a loss to Suarez Navarro in the second round of the Australian Open back in January.

The former world No. 1 Williams' triumph sets up a fourth-round match with 13th-seeded Serb Ana Ivanovic, who downed 18th-seeded Australian Samantha Stosur, a surprise French Open semifinalist this month, 7-5, 6-2. Williams and her fellow former No. 1 Ivanovic have met six times, with Williams prevailing five times.

Meanwhile, a fifth-seeded Kuznetsova was knocked out by big-serving unseeded German Sabine Lisicki 6-2, 7-5.

Lisicki needed five match points to finally put Kuznetsova away on Day 6. The German almost blew a big lead in the second set, as she led 5-2 before her Russian counterpart mounted a bit of a comeback.

The birthday girl Kuznetsova appeared as though she was on her way to forcing a second-set tiebreak, as the Russian was serving at 5-6, 40-love, but Lisicki fought back to break the Russian and reached her first-ever fourth-round match at a major.

The former U.S. Open champion Kuznetsova, who turned 24 here on Saturday, captured her second major title three weeks ago in Paris.

A sixth-seeded Jankovic was stunned by unseeded teenager Melanie Oudin in three sets, as the 17-year-old American qualifier recorded a 6-7 (8-10), 7-5, 6-2 victory.

The struggling Jankovic, who needed a long tiebreak to win the first set against the game Oudin, then took a lengthy medical timeout -- in which she lay on the court with a blood pressure cuff on her arm, at one point -- before resuming play. The former No. 1 Jankovic, of Serbia, required medical attention on two occasions before bowing out.

Ninth-seeded rising Dane Wozniacki avoided the upset bug by easily defeating 20th-seeded Spaniard Anabel Medina Garrigues 6-2, 6-2. Wozniacki was a grass- court titlist at Eastbourne last week.

Former Wimbledon champion Amelie Mauresmo posted a mild upset by taking out 15th-seeded Italian Flavia Pennetta 7-5, 6-3. The 17th-seeded Mauresmo is a former world No. 1 who captured Wimbledon three years ago for her second major title.