Patterson (ankle) didn't practice Wednesday, Terrin Waack of the Falcons' official site reports.
Patterson rejoined Sunday's 31-28 loss to Minnesota after leaving with an ankle injury, but he may be dealing with some swelling, given that he sat out Atlanta's first Week 10 practice. He's merely served as the No. 3 running back this season, so a potential absence for Sunday's game at Arizona wouldn't have much impact on head coach Arthur Smith's game plan.