Arizona Cardinals cornerback Patrick Peterson said Monday he believes he's worth more than the $57 million Seattle's Richard Sherman received recently. He just hopes to find out how much more "sooner rather than later." Peterson and the Cardinals are in the early stages of negotiating an extension to the All-Pro's rookie contract. The three-time Pro Bowler said he and Sherman are in different stages of their contracts, which means Peterson's camp has more time to negotiate. Sherman had a year left on his rookie deal when Seattle re-signed him to a four-year, $57 million extension with $40 million guaranteed last week, while Peterson has two years remaining after Arizona exercised a team option for 2015. Read more http://espn.go.com/nfl/story/_/id/1...a-cardinals-thinks-worth-more-richard-sherman