Castiglione will hold a news conference Tuesday to announce his planned retirement. Castiglione will be joined by OU Board of Regents Chair Anita Holloway and OU President Joseph Harroz Jr. Harroz announced in an email Monday the program's chair of football, Randall Stephenson, will lead the search for a new AD.

Joe Castiglione's tenure as Oklahoma's Athletic Director, from 1998 to his upcoming retirement, transformed the department from financial hardship and athletic mediocrity into a national powerhouse.

After almost 30 years in charge of the University of Oklahoma athletics department, Joe Castiglione has announced his plan to retire.