Monday morning, the world of the Oklahoma Sooners was rocked by the sudden retirement announcement of longtime athletic director Joe Castiglione. Castiglione, 67, will serve his tenure for the rest of the upcoming academic year,

The University of Oklahoma announced the retirement of one of the biggest names in college athletics on Monday.

Oklahoma athletic director Joe Castiglione, who has led the Sooners since 1998, will retire from his full-time responsibilities during the upcoming school year, the university announced Monday. Castiglione and other members of Oklahoma's administration will hold a news conference Tuesday.