Out of the postseason race, the San Francisco 49ers and Arizona Cardinals are preparing to start backups because of injuries for their season-ending matchup Sunday in Glendale, Ariz. San Francisco coach Kyle Shanahan announced Wednesday that Joshua Dobbs will start at quarterback in place of Brock Purdy, who suffered a right elbow contusion with nerve inflammation in Monday's 40-34 loss to the visiting Detroit Lions. Dobbs, who played eight games for the Cardinals (7-9) last season while Kyler Murray nursed a knee injury, finished Monday's game for San Francisco (6-10). He played five snaps, completing three of four pass attempts for 35 yards and rushing for a 7-yard touchdown.
49ers, Cardinals to end season with backups in starting roles
