Raiders first-round draft pick, wide receiver Darrius Heyward-Bey, said the hamstring that he injured during offseason workouts is at about 80 percent strength. He expects to be at 100 percent by the start of training camp. Heyward-Bey said he went through a lot of offseason drills despite not being at full strength to show coaches and teammates he could play through pain. Source: NFL.com
