Jaguars beat writer Mike DiRocco answered a question about RB Storm Johnson and getting more of a role in 2015.
DiRocco: Only if he improves his issues with pass protection. It's not a physical problem. He is willing to block and can do it. He just struggles knowing what his responsibilities are in certain protections and audibles. If he's able to figure that out then he will have more opportunities.
Blocking responsibilities are a big reason young RBs can't get on the field. The emergence of Denard Robinson last season could also limit Johnson's snaps. And don't forget about Toby Gerhart - DiRocco added that he thinks the starting spot will come down to Robinson or Gerhart in 2015. The team also signed Bernard Pierce this offseason.