"One of the things that we've talked about, and worked on since training camp even, is that during the course of the season roles change," he said. "When situations such as Corey's, where Corey is brought out of our coverage and now is starting at corner, then somebody else has got to go take that spot. So it may be somebody that's already on that unit whose role changes. Or it might have been someone that wasn't on that unit before whose role changes. So we're always trying to develop through practice and through preparation a number of guys that can do a number of things. And this time of the year is where those things come to bear."