UPDATE 3-Tennis-Sony Ericsson Open men's singles result

April 1 (Reuters) - Sony Ericsson Open men's singles fourth
round result from Miami, Florida on Tuesday (prefix number
denotes seeding, * denotes new result)
*Janko Tipsarevic (Serbia) beat 11-Mikhail Youzhny (Russia) 3-6
6-0 6-3
*2-Rafael Nadal (Spain) beat 16-Paul-Henri Mathieu (France) 6-4
6-4
1-Roger Federer (Switzerland) beat Jose Acasuso (Argentina)
7-6(5) 6-2
10-Tomas Berdych (Czech Republic) beat Dmitry Tursunov (Russia)
6-2 6-2
31-Igor Andreev (Russia) beat 15-Guillermo Canas (Argentina)
6-4 7-6(6)
9-James Blake (U.S.) beat 27-Radek Stepanek (Czech Republic)
6-3 6-4

(Compiled by Infostrada; Edited by Neil Maidment)