Purdy isn't in line to play in Thursday's preseason opener against the Titans, Vic Tafur and Matt Barrows report.
The report indicates that the 49ers won't play most of their starters Thursday, and with Purdy set to sit this one out, Mac Jones, Kurtis Rourke and Adrian Martinez are the team's available signal-caller option against Tennessee. With Jones already entrenched as Purdy's top backup, Rourke and Martinez could end up seeing the bulk of the QB reps Thursday.