The San Francisco 49ers traded for Christian McCaffrey to see what a supercharged sports car looked like in Kyle Shanahan's offense. The results have been great.
But the hallmark of Shanahan's offense, going back to Kyle's dad Mike and his days with the Denver Broncos, has been taking running backs nobody else wanted and having a ton of success with them. Backs like Jordan Mason.
With McCaffrey a surprise inactive on Monday night with a calf injury and Eli Mitchell on injured reserve, it was Mason's chance to take on a huge role.