Davis suffered a torn ACL during Sunday's game against the Browns, NFL.com's Ian Rapoport reports.
Davis was acquired via trade from the Dolphins last month and fared relatively well upon arriving with the Ravens, but will now be likely lost for the season given the extent of his knee injury. With Davis sidelined, Baltimore is left to deal with yet another significant injury blow, opening reps for the likes of Kyle Arrington, Tray Walker and Rashaan Melvin in the Ravens' cornerback rotation.