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Sean 'Diddy' Combs is a 'marketing genius': Pro

Friday, 10 Jan 2014 | 3:30 AM ET

Trevor Stirling, senior research analyst of European beverages at Sanford Bernstein, says Sean 'Diddy' Combs is a "marketing genius" after helping boost Ciroc vodka sales and teaming up with Diageo to take over tequila brand DeLeón.