Wozniacki knocked out
Former world No 1 Caroline Wozniacki became the latest Wimbledon casualty on Monday as she fell to Barbora Zahlavova Strycova in straight sets.
Czech player Strycova, ranked 43rd in the world, took her sixth match point to secure a 6-2 7-5 win on Court 12 and earn a place in the quarter-finals, where she will face 2011 champion Petra Kvitova.
Having beaten second seed Li Na in the previous round, Strycova started well and claimed the first set in 35 minutes.
Wozniacki, who spent 67 weeks as the world's top-ranked player but has since slipped to 16th, then found herself 3-1 down in the second set before breaking back.
Strycova failed to convert two match points against Wozniacki's serve in the 10th game, as her 23-year-old Danish opponent eventually held to level at 5-5.
But, following a double fault, Wozniacki sent a floated backhand just wide from close to the net as Strycova secured another outstanding victory.
It was a more straightforward affair for Czech Kvitova, who dropped just five game on her way to a 6-3 6-2 win over China's Shaui Peng.
The sixth seed needed to take just one of four break points to claim the opening set, before taking down Peng's service game twice in the second as she raced into a fifth successive Wimbledon quarter-final.
Fourth seed Agnieszka Radwanska, a finalist in 2012, crashed out, beaten 6-3 6-0 by Russia's Ekaterina Makarova.
Radwanska's fourth-round exit leaves Kvitova as the highest seed remaining in the bottom half of the women's draw.
Also on Monday, last year's runner-up Sabine Lisicki booked a date with Kazahkstan's Yaroslava Shvedova by beating Serb Ana Ivanovic 6-4 3-6 6-1 on Court One.
Despite stuttering in the second set, the German 19th seed raced into the last 16 with two deciding-set breaks against the 2008 French Open champion.
Lisicki will now face Shvedova, who was gifted a place in the next round virtue of withdrawal, for a place in the Wimbledon quarter-finals for a fourth successive year.
Former Wimbledon junior champion, Eugenie Bouchard came through a titanic tussle against Alize Cornet of France to reach the quarter-finals at the All England Club.
The 20-year-old Canadian eventually prevailed 7-6 (7-5) 7-5 and will next play either 2004 champion Maria Sharapova or Germany's Angelique Kerber.
In the day's all-Czech affair, Lucie Safarova saw off compatriot Tereza Smitkova in straight sets, dropping only two games in a 6-0 6-2 triumph.