The Facts: The Bengals signed Johnson on Thursday.

Diehards Line: Johnson will slide into a reserve role behind Andy Dalton, competing with A.J. McCarron for the backup position. He'll be familiar with the team and facilities after spending the 2013 season with Cincinnati. He spent 13 games last season inactive for the 49ers. Johnson enters his seventh season in the NFL, where he's played in 29 games with five starts, going 96 of 177 for 1,042 yards. He's thrown five touchdowns to 10 interceptions. His strength resides in his legs as a running quarterback. He's averaged 6.2 yards per rush in his career for a total of 274 yards. This also looks to bring an end to Jason Campbell's tenure as the backup quarterback. He's still an unrestricted free agent after a year when he entered for mop-up duty in four games, throwing only 19 passes.