Article Photos: Oklahoma State football: A look at Big 12 teams that could challenge favorite Oklahoma State 1/1

TCU quarterback Casey Pachall (4) throws a pass in the second quarter of an NCAA college football game against Portland State, Saturday, Sept. 24, 2011, in Fort Worth, Texas. TCU won 55-13. (AP Photo/Matt Strasen) ORG XMIT: TXMS112