Article Photos: Nebraska defense tightening up

Minnesota quarterback Max Shortell (11) fends off Nebraska's Sean Fisher in the second half of an NCAA college football game in Lincoln, Neb., Saturday, Nov. 17, 2012. Nebraska won 38-14. (AP Photo/Nati Harnik)

Minnesota quarterback Max Shortell (11) fends off Nebraska's Sean Fisher in the second half of an NCAA college football game in Lincoln, Neb., Saturday, Nov. 17, 2012. Nebraska won 38-14. (AP Photo/Nati Harnik)