... recent ankle injury to cornerback Evan Oglesby and Will Allen's slowed recovery from a torn ACL, the Miami Dolphins worked out free-agent cornerbacks Frank Walker and Matterral Richardson on Wednesday.

 

Frank Walker

A sixth-round pick by the New York Giants in 2003, Walker played four seasons with the Giants, one in Green Bay, and spent the past two years in Baltimore.

The 29-year-old Walker has appeared in 82 gam...

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