With a huge Week 17 matchup against the Indianapolis Colts on Sunday night with a playoff berth on the line, the Tennessee Titans will start quarterback Blaine Gabbert with Marcus Mariota dealing with a stinger injury.
"Big game and Marcus Mariota was intent on being out there," NFL Network Insider Ian Rapoport reported Sunday morning. "But it just doesn't seem like it's going to happen with that stinger."
The Titans later Sunday officially ruled Mariota inactive.
The teams' first meeting on Nov. 18 saw the Colts emerge with a 38-10 win over the Titans as Indy quarterback Andrew Luck pushed his career record against Tennessee to 10-0.
Heading into Week 17, Mariota had missed or been knocked out of four games this season.
Against the Colts in Week 16, Gabbert completed 11 of 16 passes for 118 yards, a touchdown and an interception.