With injuries to Kyle Orton and Chris Simms, the Broncos will start rookie quarterback Tom Brandstater in their preseason finale. Denver is scheduled to battle Arizona on Thursday night. "As a starting quarterback now -- that actually sounds crazy to say -- but I am starting on Thursday, and there's a lot of work that needs to be put in to be the guy," Brandstater told reporters. "While the other guys are not here, I'm going to act like I'm the starter, and I'm not going to look back until someone tells me I'm not playing anymore." Brandstater was a sixth-round pick out of Fresno State.