The San Francisco 49ers were able to move the ball last season thanks in large part to their three-headed rushing attack of Tevin Coleman, Matt Breida and Raheem Mostert.
San Francisco ranked second in the NFL in both rushing attempts and rushing yards, and they also leaned on a heavy rushing attack during their march to the Super Bowl.
But the Niners entered the offseason with a crowded backfield, with Jerick McKinnon looking to get back into the mix after missing the last two seasons with injury, and Jeff Wilson still in the picture as well.