[2] Among his earliest and best-known moves as OU's AD came in December 1998 with the hiring of head football coach Bob Stoops.
Castiglione's decision quickly paid off as Stoops, a first-time head coach, immediately began work rejuvenating a program that had experienced a 10-year decline.
Within two seasons, Stoops guided OU to its first national football title in 15 years and first conference championship since 1987.
After 18 seasons that included 10 Big 12 titles, victories in all four BCS games (Orange, Rose, Sugar and Fiesta), and four Heisman Trophy Winners (Jason White in 2003, Sam Bradford in 2008, Baker Mayfield in 2017 and Kyler Murray in 2018), Stoops retired in June 2017 as the program's all-time leader in victories with 190.
A native of Fort Lauderdale, Florida, Castiglione is married to the former Kristen Bartel, a 1990 graduate of the University of Missouri.