Training camp is here for the Dallas Cowboys, and the next few weeks will go a long way toward sorting out a defense that has been heavily reshaped.
Dallas made a major change on that side of the ball by moving on from defensive coordinator Matt Eberflus after just one year and turning the unit over to first-year defensive coordinator Christian Parker. The offense already has plenty of trust behind it, but Parker inherits a defense that was among the league’s worst and now has to make sense of a roster that looks very different than it did a year ago.
That makes camp especially important for a handful of players who could end up swinging the Cowboys’ plans for the regular season. Here are four names worth watching closely.
One of the most intriguing battles sits at cornerback, where Dallas did not make many additions despite its issues in pass coverage during the 2025 season. The biggest free-agent pickup at the position was Cobie Durant, and the only corner the Cowboys drafted was Devin Moore out of Florida in Round 4.
Moore has already started to make noise. He drew attention during OTAs and minicamp, and there were even whispers that he could push for a starting job.
That might be a little aggressive, but the size and talent are there for him to become a real factor. Even if he doesn’t win a job outright, he could still raise the level of play around him just by being in the mix.
The backfield has its own question, and it centers on how Dallas manages the workload for Javonte Williams. Williams was a true workhorse in his first season with the Cowboys, piling up 1,201 rushing yards and 11 touchdowns. He also signed a three-year extension this offseason, so he remains the centerpiece of the ground game.
The issue is simple: the Cowboys cannot keep leaning on him the same way they did in 2025. Williams handled 287 touches, and a shoulder injury eventually slowed him down late in the year.
That puts the spotlight on Jaydon Blue, a fifth-round pick out of Texas in 2025 who didn’t see much action as a rookie but has come into his second season looking much better. If Blue delivers, the offense gets another layer.
If he doesn’t, Dallas may have to start looking elsewhere for help.
Safety is another spot where the Cowboys have added real talent, but P.J. Locke could still carve out a meaningful role.
Jalen Thompson arrived as a major veteran addition with 87 career starts, and Caleb Downs came in as the No. 11 overall pick in the draft. That could make Locke easy to miss, but he brings value of his own.
He signed a one-year deal and offers the kind of flexibility coaches love, with the ability to play both safety spots and work in the slot. He also has a built-in edge because he spent two years with Christian Parker in Denver. That familiarity helped him stand out during offseason work, and if he keeps that momentum going in camp, he could end up with a significant job.
The biggest uncertainty may be at inside linebacker, where Dallas still has more questions than answers. Dee Winters came over in a trade with the San Francisco 49ers, giving the Cowboys a veteran option, and DeMarvion Overshown remains the kind of player who can change things when healthy. The problem is that health has been the issue since he was drafted in 2023.
That uncertainty has already sparked speculation, including talk that Tyrel Dodson could be a trade possibility. Before Dallas makes any outside move, though, it will want to see what third-round pick Jaishawn Barham can do. The Michigan product played both on the edge and at linebacker in college, but the Cowboys expect him to work inside.
There could be an adjustment period, but if Barham adapts quickly, it would do a lot to settle the defense. That’s why he stands out as one of the most important players to track once camp begins.
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