The Tennessee Titans have announced the signing of two players within hours of the start of the NFL free agency period.

Tight end Delanie Walker, who was out of contract at the San Francisco 49ers, joins the side, agreeing a four-year deal worth $17.5m (£11.7m).

The AFC South franchise has also picked up former Buffalo Bills guard Andy Levitre, who has signed a five-year contract worth $39m (£26m).

The Titans finished the 2012 season with six wins and 10 losses.