Sometimes, especially in training camp, it seems like a rash of injuries stays concentrated to a certain position. It's got no empirical evidence to back it up, but Bruce Arians has alluded to it. Back in 2015, it was the running backs. Now, for a second straight season, it's cornerback.

Yes, Justin Bethel should only be out a few days after hyperextending his knee. And the ankle issue for Elie Bouka isn't supposed to be long-term. But the Cardinals already released Jumal Rolle with an injury settlement after Rolle couldn't get straight with his hamstring, and now it seems Ronald Zamort -- who had slid into Bethel's first-team role while Bethel sat out -- has torn his ACL and would be lost for the season.

It is reminiscent of last season, when the Cards had a bunch of cornerbacks get hurt. It started when Bethel, who was supposed to be the starter, broke his foot again in the offseason, needed surgery and never could get quite right. The Cardinals signed veteran Mike Jenkins, who tore his ACL. They signed veteran Alan Ball, who received an injury settlement after hurting his quadriceps muscle. Bouka ended up on IR after a hamstring issue.

UPDATE: The Cardinals are signing CB Tramon Williams.

It would make sense that the team sign someone sooner rather than later. Right now, the healthy cornerbacks on the roster are Patrick Peterson, Brandon Williams, and undrafted rookies Sojourn Shelton, Gump Hayes and Ryan Lewis. One plus: safety Harlan Miller has gotten a lot of reps at cornerback. Rookie safety Rudy Ford can also play there.

The Cardinals recently worked out veteran cornerbacks Brandon Flowers and Tramon Williams.