Orton is listed as questionable on the injury report.
Tebow, the Heisman Trophy winner from Florida, still has a ways to go in transforming from a college quarterback who relied on his legs and a trademark jump pass into a drop-back, NFL-style passer. Still, he has made leaps in his development, with significant help from Ben McDaniels, the 30-year-old quarterbacks coach whose future was thrown into question this month when his older brother, Josh McDaniels, was fired as the team's head coach Dec. 6.
"I've always had trust in him that he was going to prepare well enough to be ready if and when we need him to play," Ben McDaniels said of Tebow. "He's done a good job with his role up to this point in the season."
Ben McDaniels said he won't try to separate himself professionally from his family ties and insisted his only concern right now is preparing Orton, Tebow and Brady Quinn for the final three games of the season.
"He's a very bright guy, just like his brother, and you can definitely tell that they're brothers," Tebow said. "He's definitely got a bright future. He's extremely smart and loves the game, and he loves learning. He's just got great qualities to make a great coach."
Instead, the team became embroiled in a videotaping scandal, sullying the image of the organization, and is in the midst of the worst slide in four decades after a series of personnel mistakes.
No matter what kind of progress Ben McDaniels makes with Tebow, or how much he assists Orton, he still might be viewed around the NFL as nothing more than Josh McDaniels' younger brother.
That, he can't help. But he does hope to stick around.
"Absolutely. I love my job. I love coaching quarterbacks. I love being around quarterbacks," Ben McDaniels said. "I respect the organization, and I appreciate the time I've had here."
Before being brought in by his big brother, Ben McDaniels instructed the quarterbacks at two high schools in Ohio, in addition to serving as a graduate assistant under Glen Mason at Minnesota from 2004 to 2005. He also played the position at Kent State University and led Canton McKinley High School in Ohio to two state championships.
Ben McDaniels served as a coaching assistant during his first season with the Broncos before being promoted to quarterbacks coach this year.
After being ousted, Josh gave Ben some brotherly advice.
"He just told me to go coach the quarterbacks. He doesn't expect me to do anything different," Ben McDaniels said.
"But like I said, my responsibility is to the players, my responsibility is to the quarterbacks to get them ready to play on Sunday. That's what I've tried to do. I know I signed up for this when I came. Josh knew that. This was a possibility. This was always a reality in the business."
The Associated Press contributed to this report.