Rap mogul Jay Z thrilled one of his first sports star charges on her graduation day by presenting her with a brand new luxury car.

The 99 Problems hitmaker has expanded his Roc Nation empire to include sports management, and female basketball star Skylar Diggins is one of his company's first clients.

Diggins graduated from the University of Notre Dame in business on Sunday (19May13) and was rewarded for her hard work with a white Mercedes decorated with a red bow.

A tweet from Jay Z's Roc Nation Sports reads, "Congrats to new Notre Dame grad Skylar Diggins! Thanks to Dancy Auto Group for helping with her surprise gift."

Diggin took to Twitter.com to share her happy news, writing, "Got surprised with a new Mercedes! Thanks so much to Jay and Roc Nation, and Dancy Auto Group! I got 99 problems, but a Benz ain't one."