Rolando McClain, and it isn't close. IMO, he or Suh should have won the Heisman that year, not Ingram. They were the 2 best college football players in America in 2011.That may be because we have a collective defense that shares the responsibility and a ton of depth. Hard to run up individual colossal numbers.
That's my theory anyway. Seriously - of the starting 11 in 2011, who was the best defensive player? I'm not sure I know for certain.