TitanInsider photo by Russell Roberts

Defensive back Curtis Riley was promoted to the 53-man roster by the Tennessee Titans on Thursday.

Riley has taken a long trek to his first duty as an active NFL player.

He signed with the Titans as an undrafted free agent in 2015, but tore his Achilles tendon during a practice at Nissan Stadium and spent his entire first season on injured reserve.

Riley, primarily a cornerback when the Titans signed him out of Fresno State, moved to safety during training camp this season, and had some impressive moments in preseason. However, the Titans released him at the end of the preseason and then added him to their 10-man practice squad.

Riley’s promotion fills the roster spot of guard Chance Warmack, who was placed on injured reserve after undergoing hand surgery.

The Titans also filled Riley’s spot on the practice squad, by signing guard Karim Barton. Barton has spent time on practice squads and in camps with the Philadelphia Eagles, Houston Texans and Cleveland Browns.