Tennessee Titans coach Mike Vrabel says running back Derrick Henry will undergo foot surgery Tuesday following an injury suffered in Sunday’s 34-31 win over the Indianapolis Colts. Vrabel did not offer a time table for Henry’s return. He suffered the injury early in the game. Meanwhile, ESPN reports the Titans are adding to their roster Adrian Peterson, the league’s fifth all-time leading rusher. The 36-year-old Peterson played with the Detroit Lions last season and rushed for 604 yards and seven touchdowns in 10 games.