The Pittsburgh Steelers last week started a young running back who had averaged 2.3 touches per game in his career up to that point. He finished that game with 36 touches, and left none for any of the other running backs.
Oh, sure, there were other carries. Wide receiver Ryan Switzer was given a draw on one play for eight yards. Quarterback Ben Roethlisberger officially had three ‘carries’, one of which was a quarterback sneak, another a kneeldown, and the third a scramble.
All the other carries in the game—or passing targets to a tailback—went to James Conner, making the first start of his career in his second season.