The Titans had a need at cornerback, as Blidi Wreh-Wilson graded out as Pro Football Focus’ 104th ranked cornerback out of 108 eligible in 2014 in his first season as the starter in place of Alterraun Verner, who departed in free agency last off-season. Wreh-Wilson was a 3rd round pick in 2013 and could have been given another shot as a starter in 2015, in hopes that he improved, but the Titans had money to spend this off-season and BWW fits much more naturally as a 3rd cornerback. Cox, for comparison, was Pro Football Focus’ 35th ranked cornerback last season in a breakout year.
Cox’s career has had an interesting trajectory. He was a 5th round pick by the Broncos in 2010 and graded out above average on 787 snaps as a rookie, but was let go after one year after being arrested on multiple sexual assault charges. Cox was out of the league entirely in 2011 thanks to those charges coupled with a history of off-the-field issues from his collegiate days at Oklahoma State. However, early in 2012, he was found not guilty and the 49ers gave him another chance. He didn’t play much in either 2012 or 2013, playing 168 snaps in 2012 and 81 snaps in 2013 (11 of which were actually with the Seahawks).
However, injuries opened up a starting role for him back with the 49ers in 2014 and he didn’t look back, playing 965 snaps and making 14 starts. He’s obviously a risky signing given his history, but he clearly has talent, showing it in both of his stints as a starter. This deal gives him 15 million over 3 years, but it likely doesn’t have any money guaranteed beyond 2015 so it’s relatively low risk and not a bad value for a player who is only going into his age 28 season and could easily continue being an above average starter in 2015 and beyond.