The Ravens also officially ruled out Flacco for Sunday.
Coming off the Ravens' bye in Week 9, Jackson was named Baltimore's starter last week against the Cincinnati Bengals. The 2016 Heisman winner carried the ball 27 times—the most by a quarterback in the Super Bowl era—and ran for 117 yards in a 24-21 win.
Jackson also went 13-of-19 for 150 yards as a passer. The Ravens' 403 total yards against Cincinnati's defense were their most in a game since Week 5.
Baltimore currently owns the AFC's final playoff spot, but four other teams enter Week 12 with an identical 5-5 record.