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Coaching Youth Football
Gap-Air-Mirror Defense for Youth Football
Single-Wing Offense for Youth Football
The Contrarian Edge for Football Offense
Coaching Freshman and JV Football

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Gap-Air-Mirror Defense for Youth Football is a print-on-demand book. That means I only keep a few in stock and print a few more every day.

I make changes whenever I discover an error or a way to improve the book. Errors are also mentioned at the GAM errata page so you can update your copy if it contains an error. Improvements to the book are only available by buying a new copy.

Below you can see the nature of any changes made since you bought your copy so you can decide whether to buy a new edition.

depth of end box vs. no-back - 1/01
OLB alignment if only 1 WR on your side and more than two quick receivers on other side - 1/01
made quads diagram coincide with alignment rule - 1/01
added E, quads with SE, and trips with SE diagrams - 2/6/01
wishbone diagram, motion diagram - 2/20/01
captain signals for missing player - 3/11/01
Dennis Creehan comment on how to stop the sweep - 3/15/01
diagrams of incorrect 4-point stances - 4/1/01
new MLB align rule vs. 2 or more back offense - 5/8/01
alignment versus veer - 7/24/01
need for increased pass consciousness by line backers and cornerbacks - 8/14/01
additional tipoffs by running backs - 10/8/01
similarity to Bear Bryant’s defense against Oklahoma - 10/11/01
clarification of wide- and short-side end technique - 10/24/01
ditto - 10/27/01
diagram illustarting the gap, air, and mirror defenders - 10/27/01
add wide-tackle 6 to defenses that work against option - 10/27/01
alignment versus team that usually shifts in a predictable way - 10/27/01
in alignment diagrams, MLB generally covers fullback if more than one back - 10/27/01
improved GAM vs. single wing diagram - 10/27/01
improved GAM vs. E-formation diagram - 10/27/01
detail on slide-technique end play to prevent bounce out - 10/27/01
add offset I to alignment diagrams - 10/27/01
added table showing which off-tackle adjustment to use against various offenses - 10/31/01
discussion and 5 new diagrams to show sweep spots for different situations - 11/25/01
Add the words “or power I” after the phrase “four backs in a line behind the center” in the cornerback alignment rule 3. - 2/4/02
Admonition to stop asking me how LBs and CBs tell if run or pass. It’s explained under the subhead “Where the action is” in the “Responsibilities” chapter, doggone it! - 8/14/02