Head coach Kevin Stefanski said Wednesday that Walker has been surpassed by Joe Flacco on Cleveland's quarterback depth chart, Jake Trotter of ESPN.com reports.
Walker struggled in relief in Week 12 against the Broncos after starter Dorian Thompson-Robinson left the 29-12 loss early due to a concussion. Thompson-Robinson remains in concussion protocol, and even if he isn't cleared in time to play Sunday against the Rams, Flacco would get the start, with Walker backing up the 38-year-old. Flacco will presumably be elevated from the practice squad prior to Sunday, regardless of Thompson-Robinson's status.