The Broncos have been working rookie quarterback Tim Tebow out as a pocket passer this weekend. Critics knocked Tebow's footwork and throwing motion before the draft, which is why Denver coach Josh McDaniels is already trying to fine-tune the rookie's skills. "He's what we thought he was," McDaniels said Saturday. "First of all, he's a rookie. He's made his share of mistakes out here. But his work ethic is what we thought it was."