Serena Williams survived a major scare before eventually securing her safe passage through to round four of Wimbledon, while defending champion Petra Kvitova secured a far more comfortable win.
Kvitova was in superb form as she secured a 6-1 6-0 victory over American Varvara Lepchenko, while Williams struggled as she eventually overcame China's Zheng Jie 6-7 (5-7) 6-2 9-7.
"I thought in the third set, if I'm going to go out I want to go out with a bang," said Williams. "I'm just fighting everything, she's playing unbelievable on grass so I'm just doing the best I can."
Kvitova has been in superb form this season and has looked near unbeatable on grass as she has lost just 13 games in three matches.
"I feel better every match that I'm playing here," said the 22 year old who vowed to play aggressively against Francesa Schiavone in the next round.
"Francesca can play very well on the grass with a good slice from the backhand. We played twice already this year on clay and hard court so we're just missing the grass, so it's time for this.
"I think she can play very well, she has a good volley, so I think she will play aggressively going to the net."
Ana Ivanovic also secured victory to secure a fourth round meeting with Victoria Azarenka as she eventually beat Germany's Julia Goerges 3-6 6-3 6-4.