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Roger Federer (right), holds his winners trophy as he poses for the photographers with runner up Jo-Wilfried Tsonga following their singles final at the ATP World Tour Finals. (AP Photo)
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Jo-Wilfried Tsonga hits a forehand to Roger Federer during their singles final at the ATP World Tour Finals. (AP Photo)
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Federer in action against Tsonga in the singles final of the ATP World Tour Finals at the O2 arena in London. (AP Photo)
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Tsonga on the ground against Federer in the singles final of the ATP World Tour Finals at the O2 arena in London. (AP Photo)
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Tsonga congratulates Federer after the latter won his sixth ATP World Tour Finals title. (AP Photo)
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Federer reacts after his victory against Tsonga in the Barclays ATP World Tour Finals at the O2 Arena. (Getty Images)
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Tsonga signs autographs for the fans following his defeat in the men's singles final against Federer. (Getty Images)
