Charlotte back Matt Johnson heads upfield during a running backs drill at the 49ers first spring practice session, held Saturday, March 19, 2016.
Charlotte back Matt Johnson heads upfield during a running backs drill at the 49ers first spring practice session, held Saturday, March 19, 2016. Bill Kiser
Charlotte back Matt Johnson heads upfield during a running backs drill at the 49ers first spring practice session, held Saturday, March 19, 2016. Bill Kiser