Scout.com > Notre Dame Irish Eyes Video: Football 101 Story URL: http://notredame.scout.com/2/729973.html Irish Eyes Staff IrishEyes.com Feb 18, 2008 Part seven of Irish Eyes Football 101 has both John and Terry talking about the 3-4 defense, and the difference between being a one-gap defense and a two-gap defense. Watch Terry and John talk about the Irish 3-4 look defense in this Irish Eyes Video Copyright © Scout.com and IrishEyes.com