The Bolton fighter probably knew that he had done little to silence the doubters who question his boxing maturity, after 18 professional fights, to challenge for a world title.

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He then claimed the little-regarded WBU international title in May when lvory Coast fighter Augustine N'Gou retired in the third round.

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Pfizer needs to convince investors it can withstand the loss of the U.S. patent of cholesterol-fighter Lipitor, the bestselling drug in the world, in as little as two years.

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