Ronde Barber, Tampa Bay Buccaneers
A mainstay at corner for the Bucs since 1997, the 35-year-old Barber no longer has the speed to keep up with NFL receivers. His best option is retirement.
Chris Carr, Baltimore Ravens
Once just a return specialist with the Raiders and Titans, Carr has actually developed into a solid starter with two interceptions and three forced fumbles in 2010. He's good enough to compete for a starting job on a lot of teams.
Drew Coleman, New York Jets
Coleman had a huge year as the Jets' nickel corner in 2010, forcing five fumbles and notching four sacks. He lacks starter ability, but is an excellent role player a lot of teams could use.
Drayton Florence, Buffalo Bills
He has had his ups and downs, but Florence has been a solid starter at times in the NFL. At 30, he might not get many more opportunities to be a starting corner, though.
Corey Graham, Chicago Bears
While Graham has never been a good starter and struggled in that role in 2008, he is without question one of the league's best special-teams players. Every team in the NFL could use his services in that department.
Ellis Hobbs, Philadelphia Eagles
Once a good corner for the Patriots as well as a great returner, Hobbs' play on defense has dropped off and neck issues may force him to retire.
Chris Houston, Detroit Lions
Despite blazing speed, Houston has never lived up to expectations as a former second-round pick of the Atlanta Falcons. He's still 26 and might be salvageable, but he's not a starter right now.
Kelly Jennings, Seattle Seahawks
Jennings hasn't been nearly enough of a playmaker since being taken by Seattle 31st overall in 2006. He has talent and might have room to grow, but he shouldn't be handed a starting job.
Richard Marshall, Carolina Panthers
A highly-regarded second-rounder in 2007, Marshall allows way too many balls to be caught and gets picked on far too often. He has a lot of ability and is still young at 26, but he needs some good coaching before he should start any more.
Dimitri Patterson, Philadelphia Eagles
After toiling as a backup with four teams over five seasons, Patterson actually performed pretty well in 16 games (nine starts) for the Eagles in 2010 with four interceptions and 11 pass deflections. He lacks ideal speed or experience, but he's a good backup to have and maybe start in a pinch.
Stanford Routt, Oakland Raiders
An underrated player who has held his own as a starter, Routt could be a could be a bargain for a team on the open market.
Ike Taylor, Pittsburgh Steelers
A six-year starter for the Steelers during some of their great runs, Taylor is a good but not great NFL cornerback. He'll get starting chances wherever he goes, but he's not a shutdown guy and may end up being overpaid.
Nathan Vasher, Detroit Lions
Once a promising starter for the Bears, Vasher's career has taken a nosedive with a brief stop in San Diego and unspectacular season in Detroit. He's one of those guys that has the physical tools but just doesn't have the other characteristics of a great cornerback.
Fabian Washington, Baltimore Ravens
Washington has become a solid cornerback in the NFL, but he's never lived up to his draft status as the 23rd overall pick in 2005 and is probably best suited as a veteran backup.
Brian Williams, Atlanta Falcons
A veteran with experience at both cornerback and safety, Williams isn't all that great in coverage and lacks ideal speed. He's purely a backup at 31, and teams would probably be better suited finding a younger player to develop with his roster spot.
Josh Wilson, Baltimore Ravens
Despite being dealt by the Seahawks just before the season, Wilson is a talented corner with starting ability and youth at age 25. He shouldn't be handed a starting gig, but he's worth signing to let him compete and he may end up being a steal.
Eric Wright, Cleveland Browns
Wright's overall game leaves something to be desired, but he's young and has all the physical tools you look for. He's a worthwhile project to keep developing.