Jay-Z is now a certified NBA player agent.

Jay-Z founded the Roc Nation Sports agency this year and will soon represent Kevin Durant as his highest profile basketball player. 

Robinson Cano of the New York Yankees is another high profile client.

Jay-Z, however, still owns his small share of the Brooklyn Nets, according to ESPN. The NBA's collective bargaining agreement does not allow agents to also be owners of teams.

Vivek Ranadive recently purchased the Sacramento Kings and has been operating the franchise while still owning a piece of the Golden State Warriors.