"Right now in this phase, it's a no-padded phase, so we get to test them in a different movement things and different positions," Davis said. "And then sometime during training camp the system is in place. Everybody out there has a system that runs four-down, three-down. ... So you use them at different times, and how much we use any of them will dictate who we're playing and the offenses we're trying to stop that week, and first and foremost, who are guys are and what they do best."