Davenport suffered a high-ankle sprain in Sunday's 19-13 win over the Bears, Ian Rapoport of NFL Network reports.
Davenport was carted off the field in Week 6 and could now be forced to miss over a month of action, as the injury carries a typical recovery timetable of 4-to-6 weeks. It's possible that Minnesota will place him on injured reserve, and in Davenport's absence, D.J. Wonnum will likely step into a starting role.