He spent the first five seasons of his career with the Titans where he compiled a 30–17 starting record. In his rookie season, Young was named the NFL Offensive Rookie of the Year and was named to the AFC Pro Bowl team as a reserve. In 2009, Young earned his second Pro Bowl selection and was named "Sporting News" NFL Comeback Player of the Year. He later played one year as a backup with the Philadelphia Eagles in 2011 and had offseason stints with the Buffalo Bills, the Green Bay Packers and Cleveland Browns from 2012–2014. In 2017, he attempted a comeback in the Canadian Football League with the Saskatchewan Roughriders, but was released before the season began.