Matthew Emmons-US PRESSWIRE
DC Manny Diaz (right) hasn't been very good.
This was the year that Texas was supposed to get back on track and contend seriously in the Big 12.
Quarterback David Ash was to command an offense with great running back depth that included the likes of Malcolm Brown, Joe Bergeron and Johnathan Gray.
Young, upstart defensive coordinator Manny Diaz had an embarrassment of riches on the defensive side of the ball. The D-line appeared particularly stout with Jackson Jeffcoat, Alex Okafor, Ashton Dorsey and others.
That perceived strength has struggled considerably. Texas ranks 107th nationally in total defense. Diaz's defense is allowing a staggering 472.1 yards and 35.0 points per contest.
Against Oklahoma in the Red River Rivalry, the Sooners rolled up 63 points against the Longhorns. Texas also allowed 50 points to Baylor, 48 points to West Virginia, 36 to Oklahoma State and 31 to Ole Miss.
Texas is 5-2 and is ranked at 24th in the latest USA Today Poll. However, those types of defensive numbers won't lead to much success for the rest of the season. There is even speculation that head coach Mack Brown has "usurped" control of the defense from Diaz.
Either way, Texas has to right the ship, or we could see the Mack Brown era come to a close.