Jay-Z's Roc Nation Sports client list

Skylar Diggins #4 of the Notre Dame Fighting Irish controls the ball against the Texas A&M Aggies during the 2011 NCAA Women's Final Four championship game at Conseco Fieldhouse on April 5, 2011 in Indianapolis, Indiana. (Photo by Jamie Sabau/Getty Images)

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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.