Earlier today, we heard from Raheem Mostert’s agent that the San Francisco 49ers were promoting the running back from the practice squad. The team made the move official Saturday afternoon. They placed Marcus Martin on injured reserve to make room for Mostert’s addition.
Martin suffered an ankle injury in Week 15, and had not practiced since. The team ruled him out on Friday, along with left guard Andrew Tiller. With this being the final game and the team needing bodies for the active 46-man roster, it makes sense to place an injured player on IR to close out the season.