Steelers QB Ben Roethlisberger's sprained left ankle remained in a walking boot on Wednesday, and backups Charlie Batch and Dennis Dixon are preparing as if they'll play on Monday night against the 49ers. Roethlisberger hasn't practiced since spraining the ankle in the second quarter of a win over Cleveland last Thursday. He declined to talk to reporters before walking out of the team's facility with a noticeable limp.