After replacing starter Kyle Orton with Tim Tebow in the second half of Sunday's loss to the Chargers, Broncos coach John Fox didn't name the team's starting quarterback going forward. "This is a high-pressure job as a player and as a coach, and we're in a performance-based business and we have to perform," Fox said after Denver's near comeback against San Diego. The Broncos have a bye this week and Fox said following Sunday's game that everything will be up for discussion.