Vikings running back Adrian Peterson says he's ready to go full strength in training camp this week. Peterson said Saturday that he has been battling tightness in his left hamstring since the second day of training camp. "It was the second practice, and I basically hit the corner with a nice little sprint and made an abrupt stop," Peterson said. "If you know anything about running, that's just something you don't do as a runner. I made that mistake, and it backfired on me. But I'm feeling good, and I'll be ready to roll Monday."