Training camp will help the New York Jets sort through their cornerback competition.

The Kansas City Chiefs are reworking their secondary, and it's going to be a tough battle to see who starts at corner.

The Lions' defensive backfield is under scrutiny following the troubling Terrion Arnold development.

The Chargers defense has a clear roster hole in the secondary. Inside the intense camp cornerback battle that will define the team’s short and long-term future.