San Francisco 49ers' center Daniel Kilgore (67) practices at the team's NFL football training facility in Santa Clara, Calif., Tuesday, June 11, 2013.
San Francisco 49ers' center Daniel Kilgore (67) practices at the team's NFL football training facility in Santa Clara, Calif., Tuesday, June 11, 2013. Marcio Jose Sanchez AP
San Francisco 49ers' center Daniel Kilgore (67) practices at the team's NFL football training facility in Santa Clara, Calif., Tuesday, June 11, 2013. Marcio Jose Sanchez AP