Third-string quarterback Brandon Weeden threw for 168 yards and two touchdowns in the second half, leading No. 12 Oklahoma State back from an 11-point deficit for a 31-28 win against Colorado on Thursday night.

With starter Zac Robinson injured and backup Alex Cate ineffective, Weeden took over in the second half and got the offense going for the Cowboys (9-2, 6-1 Big 12).

His 28-yard touchdown pass to Justin Blackmon with 8:11 remaining proved to be the winner, keeping pressure on No. 3 Texas in the Big 12 championship race. The Longhorns would have clinched the Big 12 South with an OSU loss.

Colorado got out to a 21-10 lead against the one-dimensional Cowboys before Weeden finally provided a viable passing threat. He went 10 for 15 and threw a 47-yard touchdown pass to Keith Toston.