Question: When did the football coach, who led the 2004 Oklahoma Sooners team,  announce his retirement?

Related documents: [0]  [DOC] The 2004 Oklahoma Sooners football team represented the University of Oklahoma during the 2004 NCAA Division I-A football season, the 110th season of Sooner football. The team was led by two-time Walter Camp Coach of the Year Award winner, Bob Stoops, in his sixth season as head coach. They played their home games at Gaylord Family Oklahoma Memorial Stadium in Norman, Oklahoma. They were a charter member of the Big 12 conference. [END] 
[1]  [DOC] Robert Anthony Stoops (born September 9, 1960) is a former American college football coach. He is the former head football coach at the University of Oklahoma, a position he held from 1999 until he announced his retirement June 7, 2017. During the 2000 season, Stoops led the Sooners to an Orange Bowl victory and a national championship. [END]  
Answer: June 7, 2017
June 7, 2017