I have never posted a topic.  It is far more enjoyable for me to drink scotch and attempt humorous sniping.  However, frustrated by the Frye and O-line bickering, where a fair amount of incorrect information meets the usual lazy takes, I found an article with a sophisticated breakdown of blocking concepts.

Offensive line play can be the most difficult to design, coordinate and play call. My experience comes from reading the formation and keys from the other side of the ball.  I have a limited coaching background, limited written skills, and am far too lazy to put together something of this detail, so I throw out someone else's work. I offer this up with no opinion on the coaching and talent of our situation.

Grab a beer and enjoy the read.

https://www.milehighreport.com/22451001/difference-between-zone-and-gap-...