Arizona quarterback David Olson (10) is sacked by Stanford's Jarek Lancaster during the first half of an NCAA college football game in Stanford, Calif., Saturday, Oct. 6, 2012. (AP Pho

 

              Arizona quarterback David Olson (10) is sacked by Stanford
Arizona quarterback David Olson (10) is sacked by Stanford's Jarek Lancaster during the first half of an NCAA college football game in Stanford, Calif., Saturday, Oct. 6, 2012. (AP Photo/George Nikitin)