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(110109) -- DOHA, Jan. 9, 2011 (Xinhua) -- Roger Federer of Switzerland competes in the final of the Qatar Open tennis tournament against Russia's Nikolay Davydenko in Doha, capital of Qatar, Jan. 8, 2011. Federer won the final against Russia's Nikolay Davydenko by 2-0. Xinhua /Landov/CHEN SHAOJIN)