Osweiler has gotten a chance to participate more often this offseason because the Broncos are giving their veterans more off days, and he has been impressive.
"He has a lot more command," said running back C.J. Anderson. "He wants to go out there and play. He's been confident and comfortable, and he knows what he can do. He trusts his ability."
Osweiler, who has been Manning's backup for three seasons now, has continued to mature as an NFL quarterback despite only playing in 13 career games.
"I've always been impressed with Brock and his composure and how he commands the huddle," tight end Virgil Green said. "The more and more you play in the league, the more confident you get and the more composure you have out there."
New coach Gary Kubiak wants to manage Manning's practice snaps this year. The reasons are two-fold: It will help keep the 39-year-old Manning fresh, and it will also give the coaching staff a good look at backup
Kubiak said he was aware that Manning was "not a big fan" of sitting out practice, per the AP. "I just think it's important. I talked to him about it. You want guys that want to practice. They all want to practice. But you try to convince them, 'Hey, I want you there for the long haul and as healthy as you can be and as strong as you can be, and I also want to find out about these guys."
"I think it's time for Brock to take a big step as a player," Kubiak said, per NFL.com. "A lot of times in this league, the young quarterbacks don't get the opportunity to be behind a player of Peyton's status and learn before they get the opportunity in this league ... I think Brock needs to take advantage of this. But he's going to be very competitive. I'm very impressed with his skills. I'm very impressed with how hard he works in the classroom. I know he's got all of the ability."
Kubiak told reporters at the NFL meetings Tuesday that he has spoken with Manning about decreasing his reps, allowing him to rest up and stay fresh heading into the postseason.
"I want to do what's best for him," Kubiak explained, via The Denver Post. "I went through the same process with John (Elway) late in his career, and it was a battle for me and Mike (Shanahan) to do some things with him."
Osweiler, 24, has never started a game for the Broncos after being drafted in 2012. Though he is not a threat to start over Manning, he will see more time on the practice field, in meetings and during games in which the team has a big lead.
Sanders and the Broncos were eliminated by the Colts in the AFC divisional round. Since that loss, the Broncos' coaching staff has been overhauled, with coach John Fox and offensive coordinator Adam Gase heading to Chicago.
"Well, Gase is definitely in Chicago right now," Sanders said. "And Peyton says he's going to come back, but I'm not really worried about it, I really just want to win a Super Bowl. So that is all that is on my mind."
Gary Kubiak was hired to take Fox's place in Denver, and Sanders said that if Manning doesn't return, backup
"Yeah, I think Brock is a quarterback that is on the rise, he's going to continuously get better and I feel like Kubiak's offense fits him really well," Sanders said.
Sanders signed a three-year, $15 million contract with the Broncos last March. He earned his first trip to the Pro Bowl after totaling 101 catches for 1,404 yards and nine touchdowns -- all career highs.
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