Photo: Paul ZimmerSabine Lisicki (GER) and Serena Williams (USA)
With just one former champion making it through to the quarterfinals, the women's draw at this year's Wimbledon remains wide open.
Add to that defeat for the favourite - Serena Williams - on a busy Monday at the All England Lawn Tennis Club and every player to reach the quarterfinals has a realistic chance of grass court glory.
Williams, who had won her last 34 matches prior to Monday's encounter with Sabine Lisicki, was the clear front runner in the women's competition at Wimbledon, but the German had something to say about that.
Lisicki gained plenty of fans as well as plaudits en route to a 62 16 64 victory that was as captivating as it was close.
She will play Kaia Kanepi in the quarterfinals on Tuesday after the Estonian ended Britain's Laura Robson's dream run with a tense 76(6) 75 victory in front of a partisan home crowd.
The top seed left in the women's draw is now No. 4 Agnieszka Radwanska, who ousted Tsvetana Pironkova 46 63 63 to set up a last eight clash with Li Na. For her part, the Chinese eased past No. 11 seed Roberta Vinci 62 60.
2011 Wimbledon champion Petra Kvitova remained on course to win a second singles title with a tough 76(5) 63 victory over Carla Suarez Navarro and will be rewarded with a quarterfinal against Belgium's Kirsten Flipkens.
Flipkens, a former junior Wimbledon champion, defeated Flavia Pennetta 76(2) 63 on Court 18. The remaining quarterfinal will be contested by No. 15 Marion Bartoli and Sloane Stephens, who defeated Karin Knapp and Monica Puig respectively.
The men's draw has seen a contrast of two halves. In the top half, the seeds have taken their allotted spots in the quarterfinals as Novak Djokovic, David Ferrer, Tomas Berdych and Juan Martin del Potro have progressed without a hitch.
In the bottom half, however, only No. 2 Andy Murray remains on course as projected. Murray defeated No. 20 seed Mikhail Youzhny in straight sets on Centre Court to book his place in the last eight.
He will be joined by Fernando Verdasco, who has reached the Wimbledon quarterfinals for the first time this year.
There is also the first-ever all-Polish Grand Slam encounter between No. 24 Jerzy Janowicz and Lukasz Kubot meaning that history will be made as there will definitely be a Polish man in the semifinals of a Grand Slam for the first time.
The International Tennis Federation provides men's information to the media at Grand Slam events. For a full list of this year's notes click here.