Gray (shoulder) was placed on the Titans' reserve/injured list Thursday, Terry McCormick of TitanInsider.com reports.
The Titans' rookie fourth-round pick is dealing with a nerve-related issue in his shoulder. There's no set timeline for his return, but Gray will be forced to sit for at least the first four games of the season. With the Titans on a bye for Week 5, the earliest Gray can return would be for Week 6 against the Colts on Oct. 13.