(CNN) -

Eugenie Bouchard has already won one Wimbledon title -- now she's targeting the real deal.

The 20-year-old Canadian, a junior champion at the All England Club in 2012, booked her place in the quarterfinals Monday following a straight sets win over France's Alize Cornet.

Bouchard, who prevailed 7-6 7-5, will face either Maria Sharapova or Germany's Angelique Kerber for a place in the semifinals.

The 13th seed has reached the last four of the previous two grand slams and is confident following her victory over Cornet, who had defeated World No.1 Serena Williams in the previous round.

"I'm really excited. I'm proud of the way I fought out there," Bouchard told the tournament's official website.

"Alize is a really great player. It was tough (under the roof), but it was the same for both of us. I need to focus on one match at a time, so that is my focus. This is what I've worked for, but I want to keep winning matches."

Elsewhere, Caroline Wozniacki's Wimbledon dream came to shuddering halt after she was dumped out in the fourth round Monday.

The former World No.1 was beaten 6-2 7-5 by the Czech Republic's Barbora Zahlova Strycova, who qualified for her first ever grand slam quarterfinal.

World No. 43 Strycova, who defeated Australian Open champion Li Na in the previous round, will now face either fellow Czech and 2011 champion Petra Kvitova for a place in the last four.

"Even when I had some opportunities I made some stupid mistakes or didn't play the balls properly. You know, it was kind of, I guess, one of those matches," Wozniacki, the Dane, seeded 16 at Wimbledon, told reporters.

"Of course I am a little disappointed sitting here. Obviously I would have loved to have been further.

"The fourth round has been the furthest I have got here, where I feel like I should have gone further some years, but, you know, I guess sometimes that happens.

"You just have to get yourself back up and keep working and come back next time."

Another Czech to reach the quarterfinals is Lucie Safarova who booked her place in the last eight following a comfortable 6-0 6-2 over compatriot Tereza Smitkova.

Qualifier Smitkova, ranked 175th in the world, was dispatched in 48 minutes to set up a clash with either Agnieszka Radwanska or Ekaterina Makarova of Russia for a place in the last four.

There was disappointment for Madison Keys, the final U.S. woman in the singles draw after she was forced to withdraw from her third round tie against Kazakhstan's Yaroslava Shvedova with injury.

The 19-year-old, who won the Eastbourne tournament in the lead-up to Wimbledon, failed to recover from a thigh problem which she suffered on Saturday while trailing 6-7 6-6.

"I have a muscle strain in my adductor. It's not terrible, not really a long recovery time," Keys told reporters.

"But they were warning me it could get worse, make recovery time even longer."

Keys' injury means that Shvedova moves into the last 16 where she will play Germany's Sabine Lisicki.

Lisicki, who reached the final last year, overcame Serbia's Ana Ivanovic 6-4 3-6 6-1.

While rain prevented several matches from starting on time, there were some who managed to beat the clouds.

In the men's draw, Australian Open champion Stanislas Wawrinka reached the fourth round for the first time since 2009 following a straight sets win over Uzbekistan's Denis Istomin.

The Swiss ace, ranked fifth, eased to a 6-3 6-3 6-4 win to finish off the rain-affected match which had originally been scheduled for Saturday.

Also into the fourth round is Japan's Kei Nishikori who overcame Italy's Simone Bolelli in a five-set thriller.

The 10th seed triumphed 3-6 6-3 3-6 7-6 6-4 to make it through to the fourth round for the first time in his career.

Nishikori's next opponent will be Canadian eighth seed Milos Raonic.