Thanks to Scott Hallenbeck at http://www.usafootball.com/.

The Passing Tree is the number system used for the passing routes.

The passing tree uses the universal system that has all even number routes towards that center of the field, while the odd number routes are towards the sidelines. (The routes are the same for the X, Y, and Z receivers.)

To read the rest of the article go to: http://gobluemichiganwolverine.blogspot.com/2008/05/coaches-corner-basic-passing-tree.html

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