FAIRFAX, Va. -- Tom O'Connor is retiring as athletic director at George Mason.
The school announced Tuesday that O'Connor will leave June 30 after 20 years on the job.
The 67-year-old O'Connor helped raise the athletic profile of a university that had long been known as a commuter school. The Patriots made the 2006 men's basketball Final Four under coach Jim Larranaga, and O'Connor was the chairman of the NCAA's basketball championship committee during the 2007-08 season.
Last year, George Mason moved from the Colonial Athletic Association to the Atlantic 10.
O'Connor will remain at the university in a fundraising role until January. The university has begun the search for a new athletic director.
George Mason president Angel Cabrera called O'Connor a "Patriot legend."