Rookie Harris' task: Improve Steelers' NFL-worst run game
Pittsburgh Steelers running back Najee Harris carries the ball next to safety Tre Norwood during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Pittsburgh Steelers running back Najee Harris carries the ball next to safety Tre Norwood during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Jul. 31, 2021 11:45 PM EDT
Pittsburgh Steelers running back Najee Harris warms up during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Pittsburgh Steelers running back Najee Harris warms up during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Jul. 31, 2021 11:41 PM EDT
Pittsburgh Steelers running back Najee Harris pulls in a ball during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Pittsburgh Steelers running back Najee Harris pulls in a ball during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Jul. 31, 2021 11:40 PM EDT
Pittsburgh Steelers quarterback Ben Roethlisberger talks with running back Najee Harris during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Pittsburgh Steelers quarterback Ben Roethlisberger talks with running back Najee Harris during an NFL football training camp Saturday, July 31, 2021, at Heinz Field in Pittsburgh. (Matt Freed/Pittsburgh Post-Gazette via AP)

Jul. 31, 2021 11:46 PM EDT