Jun 13, 2026 12:00 PM

The former Longhorns star is seizing the "green dot" responsibility, aiming to become the defensive quarterback and vocal leader Mike Zimmer’s unit needs to reach championship levels.

One big question mark for the Dallas Cowboys defense is who will wear the green dot and be the defensive quarterback for new coordinator Christian Parker.

We know that the franchise is trying a couple of players in that position, but there was also a thought that rookie Caleb Downs could be that player for Parker.

But as OTAs have gotten underway, it is becoming clear the group is narrowing, with DeMarvion Overshown - a favorite of Texas Longhorns fans - now seen as the clubhouse leader.

And that's not a report. D-Mo said so himself.

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When asked about why he chose to come to OTAs after his wedding, Overshown made it clear there is plenty of time for the honeymoon when the Cowboys take a break before training camp.

And in the process, revealed that he is "the" guy to be the mike linebacker for Parker.

"Right now, the main thing is the main thing, and that's to get these installs in so when we take this break before training camp, I come back as the mike linebacker that everybody can look at and say, "This is our guy, this is the guy that's going to lead our defense to the next level," Overshown said.

Overshown stated that he has been the "Mike'' before, but once he entered the NFL, he was never asked to do it.

Now, though, it appears Parker has Overshown's name circled as the one he wants to be leading his unit. 

Tasked with having direct communication with Parker on gamedays, the mike is responsible for getting the play-call out to his teammates and helping make sure everyone is lined up where they are supposed to be.

As we know, communication was poor last season for Dallas, and "Agent Zero'' is tasked with changing it.

Overshown - who jumped from Austin to the Cowboys as a third-round pick in the 2023 NFL Draft but who has battled injury issues ever since - will be right in the thick of the action, but when it comes to his responsibilities, D-Mo is ready to prove he can be the leader Dallas needs him to be.

“Just the fact that I'm in control of everything," he added. "People going to look for me to set the front or make the checks when the offense making the check, I got to be CP on the field.

"That's what we talk about a lot is I got to be an extension of him on the field. So, that's a role that you do it well, you play here for a long time. So, we all know what year this is for me. It's contract year, and you give me the green dot. So, I got an opportunity to prove myself."

So, Overshown appears ready for the challenge, and while there are others who think the Cowboys need to go and get some outside help, like Bobby Wagner as an insurance policy, Agent Zero is banking on being the quarterback of the defense.

And in a contract year, it is crucial he proves he is up to the task, because Dallas' season, as heavy-handed as it sounds, could be dependent on him making the most of this opportunity.

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