Rafael Nadal toils in Doha as Federer trounces Davydenko

World's top tennis players compete for $1,024,000 total prize money on offer at Qatar Open
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Top seed Rafael Nadal (above), in contrast, battled back from a break down in the deciding set against Germany's Philipp Kohlschreiber to triumph 6-3 6-7, 6-3 in two and a half hours (AFP/Getty Images)
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Roger Federer of Switzerland celebrates after winning against Nikolay Davydenko of Russia during their ATP Qatar Open tennis match at the Khalifa Tennis and Squash Complex in Doha on Jan 3 (AFP/Getty Images)
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World's top tennis players are competing for $1,024,000 total prize money up for grabs at Qatar Open (AFP/Getty Images)
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Federer, hoping to win a record 17th grand slam in Melbourne later this month, thumped Russian Nikolay Davydenko (above) 6-2, 6-2 in less than hour on a blustery evening (AFP/Getty Images)
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Mirka Vavrinec, wife of Swiss tennis player Roger Federer, attends her husband's ATP Qatar Open tennis match (AFP/Getty Images)
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Germany's Philipp Kohlschreiber returns to Rafael Nadal. Roger Federer staked his claim as one of the favorites for the Australian Open title later this month by romping into the second round of the Qatar Open, while rival Rafa Nadal survived a scare (AFP/Getty Images)
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Rui Machado of Portugal returns to Gael Monfils of France during their ATP Qatar Open tennis match at the Khalifa Tennis and Squash Complex in Doha on January 3, 2012. (AFP/Getty Images)
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Gael Monfils of France returns to Rui Machado of Portugal during their ATP Qatar Open tennis match at the Khalifa Tennis and Squash Complex in Doha on January 3, 2012. (AFP/Getty Images)
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Malek Jaziri of Tunisia serves against French player Jo-Wilfried Tsonga (AFP/Getty Images)
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French player Jo-Wilfried Tsonga reacts against Malek Jaziri of Tunisia (AFP/Getty Images)