Davydenko masters Ljubicic in Hamburg

• Story Highlights
• Fourth-seeded Nikolay Davydenko cruised into the third round in Hamburg
  
• Davydenko beat Ivan Ljubicic 6-4 6-1 and fifth-seeded David Ferrer also won
  
• Tommy Robredo, 2006 champion, ousted Philipp Kohlschreiber 2-6 7-6 6-3
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