49ers' Elijah Mitchell: Comes down with illness

Mitchell didn't practice Wednesday due to an illness, Matt Barrows of The Athletic reports.

The 49ers already have ruled out top running back Christian McCaffrey for Sunday's regular-season finale against the Rams due to a strained right calf, which would give Mitchell an opportunity to be the team's No. 1 back under normal circumstances Week 18. But with an illness in tow, it can't be counted on. Mitchell has two more chances this week to log on-field work, but in the meantime Jordan Mason and practice-squad member Tyrion Davis-Price represent the healthy options at the position on San Francisco's roster.