Martin (toe) was placed on injured reserve Monday, David Helman of the Cowboys' official site reports.
Martin hurt his toe in the preseason opener and likely needs surgery to address the matter, so moving him to IR was the logical step for the Cowboys. Damien Mama and Dustin Stanton both have a chance at filling Martin's role as a backup guard, as does Jacob Alsadek, who signed with Dallas after Martin's removal from the active roster.