Defense. Defense. Defense. It has been the point of emphasis in all of the losses for the Dallas Cowboys so far this season and will continue to be so until things change. Things could finally be turning around for the Cowboys defense though now that nearly everyone is healthy and back from their suspensions. The return of Sean Lee should especially improve the performance of the Cowboys D.
The last two games against the Los Angeles Rams and Green Bay Packers have been especially tough for the Cowboys defense. Both games were in the grasp of the Cowboys, but the defense unfortunately wasn't able to hold up their end of the bargain. It's no coincidence that Sean Lee missed both of those contest due to injury.
In all honesty, it's a little scary to think that the Dallas Cowboys defense depends so heavily on a 31-year-old linebacker that has struggled to remain healthy his entire NFL career, and even college for that matter. But, there is no denying that the defense is an entirely different unit with Sean Lee in the lineup.
Luckily, the Dallas Cowboys bye week couldn't have possibly come at a better time. Sean Lee absolutely needed more time to recuperate from his hamstring injury and the bye week provided that. I believe he will be ready to go against the San Francisco 49ers in Week 7, which is extremely good news for the Cowboys defense.
But, Sean Lee can't improve the performance of the defense alone. He is only one defender and it takes an entire unit doing their jobs to be successful. It's time for everybody to step up their game.

Fortunately, the return of Anthony Hitchens last week will also help the Cowboys defense. He will move back to the middle linebacker position and be an upgrade over Jaylon Smith. Nothing against Smith, but he simply isn't ready to be depended on right now as a starter. But, he does show a lot of promise. He just needs more time.
All of the youth in the secondary really needs to step up as well. We have seen improvements and reason to believe they will see the field more on a regular basis. But, each and every one of them needs to become more consistent play after play.
And I don't know about you, but I'm hoping DeMarcus Lawrence can continue to dominate as a pass rusher. That not only helps the young secondary for the Cowboys, but the entire defense as well. He's on pace to break the all-time QB sack record, and I personally hope he reaches that goal.
There is reason to believe that the addition of Sean Lee will improve the overall play on the entire Dallas Cowboys defense, but I don't believe one player holds that much power. It is going to take a collective unit executing and playing together to improve. Fortunately, there is reason to believe they can do just that.