Raheem Mostert needs to be the guy

The 49ers in Sunday continued to go without Mostert at running back in some key possessions. Despite the fact Mostert ripped off 57 yards and two touchdowns, he only got 10 of the team’s 19 running back carries. While there’s value in spelling a running back to keep him fresh, Mostert is the team’s best player at that position and needs more than 50 percent of the workload there. Matt Breida was fine with 16 yards on four totes, including a couple tough runs in a fourth-quarter drive, but Tevin Coleman was ineffective again with 11 yards on five carries. Breida and Coleman can certainly get touches since they’re explosive enough to gash a defense for a chunk play, but Mostert is playing too well to miss as many carries as he’s missing.