A San Francisco 49ers player runs on the field at Levi's Stadium during the team's NFL football training camp in Santa Clara, Calif., Saturday, Aug. 1, 2015.
A San Francisco 49ers player runs on the field at Levi's Stadium during the team's NFL football training camp in Santa Clara, Calif., Saturday, Aug. 1, 2015. Jeff Chiu AP
A San Francisco 49ers player runs on the field at Levi's Stadium during the team's NFL football training camp in Santa Clara, Calif., Saturday, Aug. 1, 2015. Jeff Chiu AP