In this week’s “Xs and Os,” Greg Cosell and Doug Farrar start their look at dominant NFL schemes with split-safety coverages and the run-pass option.

<p>In this week’s “Xs and Os,” Greg Cosell and Doug Farrar start their look at dominant NFL schemes with split-safety coverages and the run-pass option.</p>

Greg Cosell of NFL Films and ESPN’s NFL Matchup and Doug Farrar of Touchdown Wire get into the intricate details of football at the college and NFL levels.

<p>Greg Cosell of NFL Films and ESPN’s NFL Matchup and Doug Farrar of Touchdown Wire get into the intricate details of football at the college and NFL levels.</p>

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