SANTA CLARA, Calif. -- In an Insider piece, ESPN analyst Herm Edwards has ranked the top 10 cornerbacks in the NFL this season.The list will make San Francisco 49ers fans both smile and wince.Edwards has a tie at No. 10, featuring two players who were in training camp with the 49ers this summer. The tie is between 49ers' No. 3 cornerback Tramaine Brock and Kansas City No. 3 cornerback Marcus Cooper. Edwards wanted to honor the top nickel cornerbacks with this spot.