San Francisco 49ers wide receiver Michael Crabtree, left, and San Francisco 49ers tight end Vernon Davis (85) during NFL football practice at the 49ers training facility in Santa Clara, Calif., Thursday, June 14, 2012. (AP Photo/Paul Sakuma)
San Francisco 49ers wide receiver Michael Crabtree, left, and San Francisco 49ers tight end Vernon Davis (85) during NFL football practice at the 49ers training facility in Santa Clara, Calif., Thursday, June 14, 2012. (AP Photo/Paul Sakuma)