DALLAS, TX– In the second annual Dirk Nowitzki Pro Celebrity Tennis Classic American tennis pro Donald Young and amateur Justin Whitman defeated Dallas Mavericks point guard J.J. Barea and amateur Jim McKinney at the SMU Tennis Center. The event sold out in advance, and standing-room-only tickets were available today where all proceeds benefits families affect by Hurricane Harvey. Mavs owner Mark Cuban has agreed to match all proceeds up to $2 million. Check out photos from the even below.