In a sad development, Arizona Cardinals rookie wide receiver Ryan Swope has been placed on the reserve-retired list due to his concussion problems that have plagued him since his Texas A&M days.

Swope was a promising prospect drafted in the sixth round.

The Cardinals knew that Swope was a bit of a risk, but wanted to take the chance when they drafted him.

Unfortunately, it didn't work out.

“We knew Ryan has a concussion history in college and understood that it could possibly be an issue,” Cardinals general manager Steve Keim said “But weighing all the elements — the medical information available, the particular position in the draft — it was a decision we were comfortable making. As it turned out, he had a setback after he got here. Over the course of the subsequent evaluations, we all decided that Ryan’s long-term well-being was the number-one priority and this was the best course to take.”

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Aaron Wilson covers the Ravens for The Baltimore Sun