"We haven't accomplished anything yet," Cofield said. "It's going to come down to the leadership and the coach, and those aspects of our team have been great on this run. It's going to be an intense week of practice. I mentioned it last week that Coach Shanahan has had us redoing plays in practice over and over again. He's got us practicing like it's training camp again. He expects perfection, and I think guys are feeding off that. Personally, I think our [defensive] line, we didn't play our best game, and I'm going to remind guys of that. … We've got to keep playing with our foot on the gas, playing like our backs are against the wall, and keep playing like we're the underdog every week. And if we keep that mindset, we'll be rolling."