The video below illustrates the proper mechanics on how to stalk block, crack block and leverage block safeties used at Southern Illinois University.

Researchers' Note: Insiders members can login and access the video library that holds over 1 and a half hours of offensive practice video (drills: QBs, OL, RBs, and WRs). We're adding new game and practice video every week (yes - we'll be adding defensive video next week).  So, if you like the video below, you'll love our new video library - it's only available in X&O Labs' exclusive membership website - Insiders.  Click here to start your membership.




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