The Packers waived Martinez on Sunday, Wes Hodkiewicz of the team's official site reports.
Martinez played in all three preseason games for the Packers, rushing 16 times for 60 yards. The running back was unable to make the initial 53-man roster and will now be subject to waivers. If Martinez goes unclaimed, he will become a free agent able to sign with any franchise's 53-man roster or practice squad.