Texas Longhorns defensive coordinator Manny Diaz is in a make-or-break season this year, and after two years of two-faced defensive efforts, his third year in Austin will be something to watch.
Diaz's 2011 unit ranked No. 11 overall at the end of the year, led by senior linebackers Emmanuel Acho and Keenan Robinson.
His 2012 group suffered big injuries, with defensive end Jackson Jeffcoat and linebacker Jordan Hicks missing extended time. With youth and inexperience rampant in the middle of the field, combined with some atrocious tackling efforts, Texas ranked 67th on defense by year's end and gave up more yards and yards per game than any unit in the program's history.
So which unit is a better indicator of Diaz's effectiveness? Is the jury still out?
A repeat of 2012 would be bad in most people's eyes, so changes will have to be made. Or will they?