Through the first week of training camp, it appeared cornerback Ronald Zamort would become one of the major surprises of the summer for the Cardinals.

Zamort, a second-year player from Western Michigan, had moved up the depth chart, passing Brandon Williams. And when Justin Bethel suffered a hyper-extended knee on Thursday, Zamort moved into the starting lineup.

But the feel-good story ended about one hour into Saturday’s Red and White practice. Zamort crumpled in the end zone because of an injury to his right knee. Tests confirmed that Zamort suffered a torn ACL and is out for the season.

It’s a devastating blow to Zamort and a damaging one to the Cardinals. Zamort, signed as a rookie free agent a year ago, was impressive through much of 2016 training camp but was released on the final roster cut.

He was working as a counselor at a detention camp when the Cardinals signed him to their practice squad last December.

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On Saturday morning, Zamort was surrounded by reporters for the first time in his brief career. Less than four hours later, his season was over.

Even before Zamort’s injury, cornerback was a problem spot for the Cardinals. Williams was expected to compete with Bethel for the starting job, so it was surprising when it was Zamort, not Williams, who replaced Bethel.

In response, the Cardinals agreed to terms on a one-year deal with veteran cornerback Tramon Williams.

Hours before Saturday’s practice and Zamort’s injury, coach Bruce Arians said he hoped the team would soon add another cornerback.

With Zamort gone, the Cardinals now have five healthy full-time cornerbacks. Bethel is expected to miss just a few days, and Elie Bouka (ankle) has missed the last several days of work.

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