Defending champion Amelie Mauresmo takes an early 4-1 lead against unseeded teenager Lucie Safarova

But Safarova soon warms to her task and reels off seven straight games to take control of the match

And the 19-year-old holds her nerve brilliantly to complete a shock 6-4 6-3 win over the world number three

Mauresmo heads out of the tournament - the highest seed to fall so far in both singles draws

Shortly after Safarova's triumph, her boyfriend Tomas Berdych completes a comprehensive win over Dmitry Tursunov

Over on Vodafone Arena, Tommy Haas shows his class in a straight-sets win over fellow German Florian Mayer

Mario Ancic shows his frustration as he falls two sets to one down against Andy Roddick

Ancic fights back to take it into a decider but Roddick breaks at 3-2 in the fifth to clinch a thrilling match

Serena Williams is back to her stunning best in a straight-sets demolition of Jelena Jankovic

Czech teenager Nicole Vaidisova survives a few nervous moments before overcoming seventh seed Elena Dementieva

Defending champion Roger Federer looks to have too much for Novak Djokovic in the first set of their fourth-round match

Novak gives Federer a few more problems in the second set but has no real answers for the world number one

Federer wraps up a 6-2 7-5 6-3 win and looks typically unruffled as he makes his way back to the locker room