University of Texas head football coach Mack Brown announced on Sunday that Defensive Coordinator Manny Diaz has been relieved of his duties and former Longhorns co-defensive coordinator Greg Robinson has been named to the position. Diaz will be reassigned to a position within the athletics department. This comes one day after the Longhorns defense gave up a school record 550 rushing yards in a 40-21 loss at BYU and falling out of the Associated Press Top 25 on Sunday.

"Our performance on defense last night was unacceptable, and we need to change that," Brown said. "Greg will be here tonight and get with the staff and players to start preparing for Ole Miss. He will be running our defense immediately. We're very fortunate that Greg has been around, watched all of our practice video and has a good scouting report moving forward. His familiarity with the staff and players should make for a smooth transition. He knows this place, did a terrific job in leading our defense before, and I'm excited to have him back on the field. We're back at it and working hard to beat Ole Miss this weekend."

A veteran of 36 years of coaching who has served as a defensive coordinator on two Super Bowl winning teams, and the Longhorns’ 2004 Rose Bowl Championship squad, Robinson began a stint as a football analyst with Texas in July.