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Tim Henman's quest to reach the quarter-finals starts badly as he loses the first set to Nicolas Kiefer on a tie break

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But the British number one fights back to break the German twice and take the second set 6-3

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And the number five seed steps up another gear as he crushes Kiefer in the third set 6-1

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Number 19 seed Kiefer bounces back to take the fourth set on a tie break and take the match into a decider

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But Kiefer retires with an injured wrist in the final set handing victory to Henman on his 30th birthday

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Japan's Shinobu Asagoe upsets 29th seed Eleni Daniilidou from Greece 7-6 4-6 6-3 to move into the quarter-finals

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Number six seed Andre Agassi strolls to a straight sets victory over Armenia's Sargis Sargsian 6-3 6-2 6-2

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Slovakia's Dominik Hrbaty celebrates after coming from two sets down to beat Olivier Rochus in round four

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Venus Williams feels the strain after failing to get the better of compatriot Lindsay Davenport

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Lindsay Davenport withstands Venus Williams' late fightback to book a quarter-final match with Shinobu Asagoe

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Defending champion Justine Henin-Hardenne stares in disbelief as she crashes out of the competition

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Nadia Petrova has plenty to smile about as she knocks out defending champion Justin Henin-Hardenne in straight sets