After the Cowboys coughed up five fourth-quarter leads in games they lost last season, including three double-digit advantages (a league record), they knew improving the secondary had to be their primary off-season focus. At cornerback they looked for a major upgrade from the oft-scorched Terence Newman, and they got just that when Carr, formerly with Kansas City, accepted a five-year, $50.1 million deal. After a preseason in which he has looked like the closest thing the Cowboys have had to a shutdown corner since Deion Sanders turned in his bandanna, Carr is making believers of everyone in Dallas. Coach Jason Garrett and defensive coordinator Rob Ryan have raved about Carr's work ethic and professionalism, and every Cowboys receiver already measures himself by how well he does against Carr's press coverage skills. Dallas must face off six times this season against quarterbacks Eli Manning, Michael Vick and Robert Griffin III, and Carr's presence gives the Cowboys' secondary at least one ace of its own. "You have to compete with the teams you have to beat in your division, and every one of our [NFC East] opponents has big-time receivers and big-time playmakers," Garrett said. "Carr gives us the chance to counter that."