Tim Henman

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Britain's Tim Henman and Mark Petchey both moved into the quarter- finals of the Shanghai Men's Open yesterday. Henman, the 21-year-old from Oxford, beat Jim Grabb, of the United States, 6-2, 7-6 while 25-year-old Petchey, from Essex, defeated the German, Patrick Baur, 6-4, 6-4. Britain are now assured of a semi-final place as Henman and Petchey will play each other in the last eight. Another Briton, Andrew Richardson, was beaten 1-6, 6-3, 6-4 in the first round by Lars Jonsson, of Sweden.

Thomas Muster, of Austria, will replace Andre Agassi as world No 1 when the ATP rankings are published on 12 February. Agassi, who replaced Pete Sampras at the top during the Australian Open last week, is demoted because of a change in tournament scheduling.

Southampton's Chris Wilkinson bowed out of the ATP Challenger event in Lippstadt, Germany, yesterday. The fifth seed was beaten 6-1, 6-7, 6-2 in the second round by Radomir Vasek of the Czech Republic.

SHANGHAI MEN'S OPEN (Shanghai, China) Singles, first round: L Jonsson (Swe) bt A Richardson (GB) 1-6 6-3 6-4; A Cherkasov (Rus) bt R Agenor (Haiti) 7-6 7-6. Second round: T Henman (GB) bt J Grabb (US) 6-4 7-6; M Petchey (GB) bt P Baur (Ger) 6-4 6-4; A Olhovskiy (Rus) bt H Arazi (Mor) 4-6 7-6 7-5; C Caratti (It) bt O Ogorodov (Uzb) 6-2 6-3.