I've been reading up on some football styles and looking at a lot of drawn up plays simply for my own knowledge.. I keep coming across the term "belly runs" (We ran a lot of belly last year) However drawn up they look exactly like iso runs. Does anyone know the difference?
Football Minds: Xs and Os Question
Is correct. A Belly run is essentially an ISO run but, someone just wanted to tag it a belly run. The main thing/objective is to send one back through one hole and another back through another to force the defense to make a decision. That's it, nothing too complicated. A good example would be the belly option where the qb would fake a dive to the fullback and run the option attacking the defensive end.
Belly - noun: another football term that has come to mean different things namely an option play or an inside zone play; in Vince Lombardi’s Green Bay Packer offense, it was a fake fullback dive right, halfback dive left with the halfback taking a jab step to the right before running to the left A or B gap bubble depending upon the movement of the defensive tackle; the left guard was to use Lombardi’s whichever-way-he-wants-to-go blocking technique on the defensive tackle and the halfback ball carrier was to read that block and “run to daylight;” verb: to run a path that goes slightly backward and away from the line of scrimmage before coming back toward the line of scrimmage as in a swing pass route
Iso - short for isolation play, same as lead play
Lead - offensive play in which a fullback goes through a bubble to block a linebacker followed by a ball carrier
The above posters are correct.
But in addition, I've been a part of one offense before (a Wing T offense) in which the tackle and guard cross-blocked. In other words, the tackle goes first and blocks down on the defensive tackle. The guard waits for the tackle to cross his path and then blocks out on the defensive end. After they cross, the dive back leads through the hole on the linebacker. Meanwhile, the fullback takes the path described above and follows the dive back through the hole.
Completely agree w/ Magnus. A Wint T is a prime example of Belly
Magnus, what is your football position speciality? Not really related to the OP's question, just curious and never saw it posted.
As far as specific positions, I've coached offensive line, defensive line, linebackers, and long snappers.
In Michigan's case the last 3 years the belly has been a inside zone run with a zone blocking scheme. Meaning 2 offensive lineman will block one guy and then one of them will chip to a linebacker. An iso play tends to involve a fullback in the backfield, usually out of an I formation. The blocking scheme for that is bigs on bigs ( O lineman vs D lineman) and your fullback will go back on back with the linebacker that you want to isolate.