San Francisco 49ers players run at Levi's Stadium during the team's NFL football training camp in Santa Clara, Calif., Sunday, Aug. 2, 2015.
San Francisco 49ers players run at Levi's Stadium during the team's NFL football training camp in Santa Clara, Calif., Sunday, Aug. 2, 2015. Jeff Chiu AP
San Francisco 49ers players run at Levi's Stadium during the team's NFL football training camp in Santa Clara, Calif., Sunday, Aug. 2, 2015. Jeff Chiu AP