Carr gets each team's best receiver every week and hes shut down some really good guys. Not worried about him at all.
But I can't truly evaluate this secondary until this defense starts to consistently generate some pressure on the QB.
As far as Jenkins is concerned I'm not sure whats going on, he's proven to be an elite level corner. Don't know if team is pulling a New England and just big league-ing the heck outta him. Driving down his stock by not giving him an opportunity to play. Which wouldn't make much sense because I doubt Dallas re-signs him, they've got Carr, Clai, and Scandrick tied up for the next 4 years.
If anything you'd want to drive his stock up and hope some team gets desperate and throws you some picks for a guy you're going to lose at the end of the season anyway. But I don't know the details, he may not be 100% from the shoulder and the team wants to save him for the stretch.
Who knows, either way he's not gonna be a Cowboy next year so you might as well get every bit out of him that you can.