Use coverage checks to get your defense in the best position to defend the route combinations. But don’t overcomplicate it. In our JDFB defensive coaching systems we use a number of basic coverage checks to get your secondary in the best position to defend potential route combinations. But we can’t be confused doing it - so it needs to stay simple. Today’s JDFB Quick Clinic question focuses on the 3 basic coverage checks that we use, particularly in man coverage, for defending route combinations based on alignment.  This question was sent in on Twitter. You can send in your questions for the JDFB Quick Clinic by messaging me on Twitter @footballinfo or sending an email to me at joe@joedanielfootball.com.