Halftime: Stanford 27, Colorado 7

PALO ALTO, Calif. -- Observations from the first half.

Stat of the half: Colorado has minus-1 yard rushing and quarterback Tyler Hansen has been sacked three times.

Turning point: It could have been the opening kickoff, when Jeremy Stewart fumbled the short pop-up kick and gave the ball to Colorado at the Stanford 36. But the defense stiffened and Max Bergen blocked a 29-yard field goal attempt and returned it 75 yards for a touchdown.

Best player: With the exception of the one interception (a deflection off Chris Owusu’s hands) Andrew Luck has been sensational per usual. He’s buying time in the pocket and all but one or two of his passes have missed. He’s 14-of-18 for 219 yards and a touchdown.

What Stanford has to do in the second half: Tackle better. Devon Carrington sniffed out the 76-yard screen pass to Rodney Stewart, but he missed the tackle. That was all it took for the speedy running back to break away. Same thing on the 5-yard shovel-pass touchdown to Tony Jones, Stanford missed two tackles.

What Colorado needs to do: Stop committing penalties. They have five for 42 yards. With the exception of a couple of plays, the Buffs look completely disorganized and disheveled.