Diaz is in his 13th season and fifth school as a Defensive Coordinator. He first job as a Defensive Coordinator was at Middle Tennessee State in 2006. Diaz has also worked at Mississippi State twice, Texas and Louisiana Tech. He has the Miami Hurricanes defense positioned as one of the best in the country.
Miami is second in total defense, 12th in rushing defense, second in pass defense, first in tackles for loss, sixth in sacks and seventh in turnovers forced. They are marking themselves as one of the greatest defenses in Miami Hurricanes history.