Receiver Cecil Shorts III remains sidelined with a hamstring injury.
Coach Gus Bradley says Lee, a second-round draft pick from USC, is rusty after missing the last three games with hamstring issues. Gratz sat out Sunday's 17-9 loss to Pittsburgh because of a concussion sustained the previous week. He was cleared to practice Wednesday, but Bradley says he will have to win back his starting job.
Fellow second-year pro Demetrius McCray replaced Gratz against San Diego and played well. He turned into another solid performance against the Steelers, helping hold top receiver Antonio Brown to five catches for 84 yards.
The Jaguars play the Tennessee Titans on Sunday.
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