The 49ers signed Martin to a reserve/future contract Tuesday.
Martin was reverted to the 49ers' practice squad Monday, per the NFL's transaction log.
The 49ers elevated Martin to their active roster Saturday.
The 49ers signed Martin to their practice squad Wednesday.
The 49ers waived Martin on Tuesday, Tom Pelissero of NFL Network reports.
The 49ers signed Martin to a reserve/future contract Tuesday, Nick Wagoner of ESPN.com reports.