Porter (ankle) is listed as questionable for Sunday's game against the 49ers, Tommy Yarrish of the Cowboys' official site reports.
Porter was unable to play against the Colts in Week 9 due to an ankle injury, and he posted a DNP-DNP-LP practice log for Week 10 prep. DaRon Bland (ankle) is also listed as questionable, and the next options available for outside cornerback are Cobie Durant, Ameer Speed and Shavon Revel.