this was posted on facebook, on a pitt football group. Written last year I believe, really gives a lot of good insight on Pat's defense, how the Cb's and Safeties are used etc.. Apologies in advance if im not giving proper acknowledgements on posting an article without citing references..
http://grantland.com/the-triangle/michigan-state-oregon-pat-narduzzi-defense-breakdown/
http://grantland.com/the-triangle/michigan-state-oregon-pat-narduzzi-defense-breakdown/