The San Francisco 49ers start their season Monday night against the Minnesota Vikings, but who will start at corner is still a mystery.
According to the Sacramento Bee, the 49ers haven't decided on their second starting corner.
What isn't a mystery is that the Vikings will attack either Kenneth Acker or Keith Reaser early and often. Both are rookies and one will be starting Monday night.
The 49ers drastically overhauled their roster and that means either Acker or Reaser will be counted on to step up in a big way this season.