The Titans started backup Blaine Gabbert at quarterback with Marcus Mariota still nursing a sore elbow and the offensive line banged up.
The Niners have met with QB Colin Kaepernick, who was demoted prior to having season-ending surgery, as they're still open to bringing him back for the 2016 season.
Colin Kaepernick has an "extensive" labrum tear in his non-throwing shoulder, according to a report.
The Niners will stay with Blaine Gabbert under center when they next play, at Seattle, after their bye week.
Speaking publicly for the first time since being benched, 49ers quarterback Colin Kaepernick did not agree with the team's decision and took issue with comments made by his coach and coordinator.
The San Francisco 49ers have officially made the change at quarterback from Colin Kaepernick to Blaine Gabbert for this week's game against the Falcons.
