San Francisco 49ers running back DuJuan Harris rushes against the San Diego Chargers during the first half of an NFL preseason football game Thursday, Sept. 1, 2016, in San Diego.
San Francisco 49ers running back DuJuan Harris rushes against the San Diego Chargers during the first half of an NFL preseason football game Thursday, Sept. 1, 2016, in San Diego. Denis Poroy AP
San Francisco 49ers running back DuJuan Harris rushes against the San Diego Chargers during the first half of an NFL preseason football game Thursday, Sept. 1, 2016, in San Diego. Denis Poroy AP