What's left in the cornerback market for Ravens

The Baltimore Ravens are reportedly interested in Perrish Cox, Brandon Browner, Cary Williams and Tramon Williams. If there was a cornerback available, you likely heard the Ravens were linked to them.

So, why didn't the Ravens sign any of them? Their limited salary-cap space.

The Ravens are $8.3 million under the salary cap, according to spotrac.com, which means they're going to be out of the running for any costly free agent. That's not going to cut it when it comes to adding a cornerback, a position where salaries get out of control.

By my count, 20 cornerbacks have reached agreements through the first six days of free agency and seven of them signed deals averaging over $7 million per season. Translation: too expensive for the Ravens.

This market value on cornerbacks is another reason why Lardarius Webb won't take a pay cut. He's not going to reduce his $8 million salary when he knows the Ravens can't afford to release him. It would be too costly to replace Webb.

Plus, there's not much left in the cornerback market right now. Here are the top 10 available cornerbacks:

1. Patrick Robinson, Saints: His best season came in his contract year, when he broke up 11 passes and intercepted two in 2014. Robinson is inconsistent but he's the top starter-caliber corner left. He is visiting the Pittsburgh Steelers, and he's drawn interest from the Saints, Vikings, Panthers, and Dolphins.

2. Rashean Mathis, Lions: He's a short-term option at the age of 34. Mathis played extremely well last season, when he was ranked No. 12 by Pro Football Focus. The Lions are interested in bringing him back. Update: Mathis re-signed with the Lions.

3. Alan Ball, Jaguars: He was the Jaguars' best cornerback in 2013 but took a step back in 2014 before suffering a season-ending biceps injury. Ball is 29 and has intriguing size (6-2). His biggest problem is staying healthy. Ball is not expected to re-sign with Jacksonville.

4. Tarell Brown, Raiders: The good news is he started all 14 games he played last season. The bad news is it was for the three-win Raiders. Brown was the 31st-rated corner by Pro Football Focus last season. He is an interesting option considering his age (he just turned 30) and his experience (56 starts in four seasons). Brown did suffer a season-ending foot injury in December.

5. Sterling Moore, Cowboys: His claim to fame is knocking the ball away from Lee Evans in the AFC Championship Game three years ago and denying the Ravens a trip to the Super Bowl. Moore became a free agent when the Cowboys declined to tender him as a restricted free agent. Rated the 22nd-best cornerback last year, Moore is visiting the Steelers on Tuesday and the 49ers on Wednesday. He previously met with the Buccaneers.

6. Bradley Fletcher, Eagles: He's a physical press corner who is looking for a second chance. Last season was an embarrassing one for Fletcher, who gave up nine touchdowns (second-most in the NFL). He's only 28 and has 27 starts the last two years. Update: Fletcher signed with the Patriots.

7. Kyle Wilson, Jets: The first-round bust is an average slot corner but gets beat repeatedly on the outside. He has been involved in only six takeaways in five years (three interceptions, one forced fumble and two fumble recoveries). Some team will likely take a flier on him because he's only 28.

8. Josh Wilson, Falcons: The former Ravens' defender is an adequate but undersized nickelback. He just turned 30 and is a year removed from being a starter with the Redskins. But Wilson missed 11 tackles last season and quarterbacks completed 70 percent of their throws against him.

9. Charles Tillman, Bears: He's 34 and he's only played 10 games the past two seasons because of triceps issues. Tillman is a playmaker when healthy, but he might have to switch to safety to extend his career. This could be a situation where he announces his retirement if he doesn't receive any interest.

10. Terence Newman, Bengals: He has decided to play another year after contemplating retirement at age 36. Newman broke up 14 passes, his most in five seasons, but he was benched late in the season. He also hasn't played a full season since 2010.