JACKSONVILLE, Fla. The Jacksonville Jaguars promoted quarterback Mike Glennon from the practice squad to the active roster Tuesday and placed linebacker Quincy Williams on injured reserve. Williams, a fifth-round draft pick who was benched last season, had surgery for a core muscle injury last month. Glennon gives the Jaguars an experienced backup heading into the opener against Indianapolis on Sunday. Rookie sixth-round draft pick Jake Luton beat out Glennon for the backup spot, but the veteran might be a better option, if needed, to fill in for starter Gardner Minshew early in the season. Jacksonville also rounded out its 16-man practice squad by signing defensive tackle Daniel Ekuale and cornerback Sidney Jones.