Steve Ballmer introduced his first major hire as owner of the Clippers on Saturday, with new president of business operations Gillian Zucker joining Jeanie Buss of the Lakers as the only female chief executive or president in major U.S. pro sports.

Zucker spent the last nine years as president of Auto Club Speedway in Fontana, the West Coast's largest racetrack. The 45-year-old Zucker replaces Andy Roeser, who took an indefinite leave of absence last spring during the scandal involving former owner Donald Sterling.

Zucker says when Ballmer bought the Clippers in August, she thought running the team's business side would be a job she would love and looks forward to learning about the Clippers.