Gerhart (ankle) practiced fully Thursday. Per John Oehser of jaguars.com, with Denard Robinson out for the season, Gerhart is expected to start at running back for the Jaguars on Sunday against the Ravens, though look for Storm Johnson and Jordan Todman to figure into the team's Week 15 backfield mix as well, a potential time-share outcome supported by the fact that the trio shared practice reps on Thursday.