It’s Week 2 of the NFL season, and the Dallas Cowboys ’ defense is out of sync. Dallas is giving up an average of over 300 passing yards to the opponents. A glaring problem that stands in sharp contrast to last year’s solid unit.

Not talking about the obvious #11 void in the defense, the spotlight shifts now to veteran corner, a player who has not quite meshed with new defensive coordinator Matt Eberflus’ scheme.

That player is Trevon Diggs , who might get on the trading block.

Under Eberflus, the Cowboys’ defense has shifted dramatically from the Mike Zimmer and Dan Quinn years. He leans almost exclusively on zone coverage — 96% of snaps against the Giants came in zone — and the system demands corners who can stay disciplined in space without costly lapses.

That’s w

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