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The 40/40 Club 10 Year Anniversary Party - Inside

NEW YORK, NY - JUNE 17: (Exclusive Coverage) Juan 'OG' Perez, Geno Smith, Jay-Z, Victor Cruz and Robinson Cano attend The 40/40 Club 10 Year Anniversary Party at 40 / 40 Club on June 17, 2013 in New York City. (Photo by Kevin Mazur/Getty Images)

Jay-Z's Roc Nation Sports client list

July 3, 2013

Jay-Z founded his sports agency this year and has already made aggressive moves in the sports world. In a few months he has managed to develop a strong client list of powerful athletes.