"It's a little nerve-wracking as a coach because you don't want to put him in a situation where he's not comfortable,'' coach Gary Kubiak said after Friday's practice, via ESPN.com. "So you're trying to isolate on what he feels good about. And when you're calling a game like that it gets tough to call -- put him in, take him out, that type of thing ... (But) his eagerness to help us out is helping us. He's so eager, he's lived here this week, he hasn't been home.''