As the free agent quarterback dominos continue to fall in the NFL this week, the San Francisco 49ers have lost one of their own.

Quarterback Mason Rudolph is headed back to the Pittsburgh Steelers after spending one year with the Tennessee Titans. Mike Garafolo of the NFL Network first reported his return along with Ian Rapoport.

Now, the veteran journeyman joins a Tennessee quarterback room that currently only houses himself and Will Levis, but which should see further additions via either free agency or April's draft, in which the team holds the No.