Two people with knowledge of the decision say Zack Martin is retiring after a decorated career that included seven All-Pro seasons at right guard with the Dallas Cowboys. Martin informed Cowboys owner and general manager Jerry Jones of his decision in a meeting Thursday. The 34-year-old Martin didn’t make it through his 11th and final season with the Cowboys because of an ankle injury that eventually required surgery. Martin made nine Pro Bowls and was a member of the Pro Football Hall of Fame’s 2010s all-decade team.
