Gabbert remained in the NFL's concussion protocol when the Titans resumed practice Wednesday, Jim Wyatt of the team's official site reports.
If Gabbert is unable to gain clearance from the protocol and suit up Sunday against the Eagles, Austin Davis would likely dress as the understudy to Marcus Mariota. Gabbert had started the previous two games while Mariota managed an elbow injury, but the Titans are confident that Mariota will be able to run the direct the offense effectively in Week 4, according to Wyatt.