The Tigers (1-6, 1-5 Southwestern Athletic Conference) were driving late in the fourth quarter when McNair sacked Homer Causey to end the 57-yard drive on Alcorn State's 33.
Alcorn State (6-2, 4-1 SWAC) took a first quarter lead on two Haiden McCraney field goals of 40 and 27 yards. Texas Southern went out front 7-6 on a 2-yard rushing score by Daveonn Porter and extended it on Eric Medina's 30-yard field goal. The Braves retook the lead 13-10 with a John Gibbs Jr. scoring pass to Anthony Williams III from 32 yards out. A 44-yard Medina field goal tied it at the half.
Gibbs threw a 39-yard touchdown pass to LaDarrien Davis to end the scoring. Gibbs finished with 230 yards passing and 36 yards rushing.
South Carolina AD Ray Tanner is not "100 percent sure" Saturday's game vs. No. 7 LSU will be played at Williams-Brice Stadium because of devastating floods that hit the state.
UCLA junior linebacker Myles Jack has withdrawn from school and will enter the NFL draft, making the decision just weeks after suffering a season-ending knee injury.
The Oklahoma State Cowboys' defense has lost senior middle linebacker Ryan Simmons for the season because of a knee injury.
A judge has dismissed simple assault charges against Rutgers wide receiver Leonte Carroo after the woman he allegedly attacked after a football game said she didn't want to testify.
Colorado coach Mike MacIntyre said he was sorry for getting into a sideline altercation with an assistant coach during a 41-24 loss to Oregon over the weekend.
The Fresno County District Attorney's office has filed charges against Fresno State quarterback Zack Greenlee and a teammate arrested last month during a house party near the campus.