The other thing about Kubiak's impact on Carr is that he has told Carr he'll have competition for his job. Those are hollow words, you say, when the competition is Sage Rosenfels. But hold on. Rosenfels is a smart guy with a better arm than you think. Phil Simms calls him "the most underrated guy in free agency this year.'' Watching him inside the Texans' bubble the other day, Rosenfels threw hard and accurately. He should give the Texans a backup they'll be more comfortable throwing in there than Tony Banks or Dave Ragone. Clearly, though, if Carr goes down for any length of time, the Houston offense will likely go down with him. "A quarterback who can push David will help him,'' Kubiak said.