After the shock exit of Ana Ivanovic and Maria Sharapova, day six at Wimbledon looked like providing another major upset in the women's draw as Caroline Wozniacki stunned Serbia's Jelena Jankovic by taking the first set 6-2.

Jankovic had no answer to the Danish teenager's returns and chalked up 39 errors during the match. She converted fewer than half of her break points  – something she will definitely have to improve upon if she meets Venus Williams in the quarter-finals. On the positive side, what mattered most, and what would have helped Sharapova and Ivanovic, was the grit and determination it took to fight off a lower-ranked opponent playing outstanding tennis, and Jankovic certainly put up a great fight.

Considering that both Sharapova and Ivanovic had been to the semis, or better, at SW19 while Jankovic has never been beyond the last 16, it seemed as though the No.2 seed was ripe for the picking to complete a trio of top three upsets. But despite the first set scoreline and threats of an early break against her in the second, Jankovic pulled through with a 2-6 6-4 6-2 win to reach the fourth round.

Jankvovic will now play Tamarine Tanasugarn, who beat Marina Erakovic. This was a great effort by Thailand's verteran player who battled many injuries and decided to go on with her tennis career at 31 years of age.

Meanwhile, Venus faced some late resistance but managed to get past crafty Spanish qualifier María José Martínez Sánchez, 6-1 7-5 to set up a meeting with Alisa Kleybanova of Russia.

Last but not least, let's have a few words about Shahar Peer of Israel, who upset No.9 seed and Roland Garros runner-up Dinara Safina in an absolute nail-biter, 7-5 6-7(4) 8-6, and will next face No.5 seed Elena Dementieva. Safina finished in tears after a three-and-a-half-hour marathon match, with the final set lasting over an hour and a half. Both players put up a huge and brave fight but the nerves of the 24th seed were stronger than Safina's at the end of the 14th game of the deciding set.