Mariota was benched for Tannehill in the third quarter of the Titans' 16-0 loss to the Broncos in Denver Sunday. He completed 7 of 18 passes for 63 yards and threw two interceptions in the loss. Tannehill completed 13 of 16 passes for 144 yards and threw one interception against the Broncos.
Titans coach Mike Vrabel said after the loss he would evaluate the team's quarterbacks and determine if Tannehill or Mariota would be the starter moving forward.
"We are going to take it one day at a time, but I don't think that the answer is a revolving door at that position or at any position," Vrabel told reporters Monday. "You'd like to have some continuity ... I think there's a lot of factors [in making the decision]. Again, there are things we'll talk about and just try and come up with the best decision moving forward with the team."
Mariota, 25, has completed 59.1 percent of his throws for 1,179 yards, seven touchdowns and two interceptions in six starts this season. He has also been sacked a league-high 25 times. The No. 2 overall pick in the 2015 NFL Draft is in the final year of his rookie contract.
Tannehill completed 64.2 percent of his throws for 1,979 yards, 17 touchdowns and nine interceptions in 11 starts for the Miami Dolphins last season. He threw for 20,434 yards, 123 touchdowns and 75 interceptions in 88 starts for the Dolphins before he was traded in the off-season.
Tannehill, 31, is also set to hit free agency this off-season.
The Titans host the Chargers at 4:05 p.m. EDT Sunday at Nissan Stadium in Nashville.