The Tennessee Titans have signed safety Rashad Johnson to a one-year contract. Johnson was previously with the Arizona Cardinals. He has 15 career interceptions, nine in the past two seasons. Johnson had five interceptions last season and four in 2014. He had 92 tackles in 2014, a career-high. He also returned two interceptions for touchdowns. Johnson was a team captain at Alabama twice and a two-year starter. Follow me on Twitter: @AaronWilson_NFL Aaron Wilson covers the Texans for The Houston Chronicle.