The challenges the Niners will face against the Miami Dolphins. Arik Armstead is likely to return. A look at the Niners' injury issues. The need for the Niners defense to stop the run. Familiar faces from the Dolphins offense returning back to Levis Stadium. How the Niners are familiar facing the Dolphins type of offense. Former Niners RB Raheem Mostert latest comments. And how the Dolphins may be without their two starting offensive tackles.  Learn more about your ad choices. Visit megaphone.fm/adchoices