Personnel switch giving Sooners a boost

Gabe Lynn stepped in and started for injured Oklahoma cornerback Jamell Fleming tonight, but struggled mightily in the first half.

That didn't change in the second half, when he gave up a 40-yard pass over the top to Marcus Kennard that helped set up a Texas Tech touchdown.

Oklahoma responded. It moved former corner and starting safety Aaron Colvin back to cornerback, benched Lynn and moved senior backup Sam Proctor, who has a lot of starting experience, back to safety.

Since the switch, Oklahoma hasn't given up a touchdown or a completion over the top of the defense.

Demontre Hurst has been solid opposite Colvin and Lynn at the other corner spot.

Oklahoma trails 34-24 early in the fourth quarter, but for now, the biggest defensive hole appears to have been patched up.