UPDATE 3-Tennis-Australian Open men's singles round 4 results

Sun Jan 20, 2013 2:45pm GMT

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Jan 20 (Infostrada Sports) - Results from the Australian Open Men's Singles Round 4 matches on Sunday 
1-Novak Djokovic (Serbia) beat 15-Stanislas Wawrinka (Switzerland) 1-6 7-5 6-4 6-7(5) 12-10 
5-Tomas Berdych (Czech Republic) beat Kevin Anderson (South Africa) 6-3 6-2 7-6(13)         
10-Nicolas Almagro (Spain) beat 8-Janko Tipsarevic (Serbia) 6-2 5-1 (Tipsarevic retired)    
4-David Ferrer (Spain) beat 16-Kei Nishikori (Japan) 6-2 6-1 6-4

After wave of QE, onus shifts to leaders to boost economy

DAVOS, Switzerland - Central banks have done their best to rescue the world economy by printing money and politicians must now act fast to enact structural reforms and pro-investment policies to boost growth, central bankers said on Saturday.