Broncos have plan in place for Brock Osweiler if Trevor Siemian goes down

ENGLEWOOD, Colo. -- If all goes as planned the Denver Broncos will not have to play Brock Osweiler at quarterback in Monday night's regular-season opener, but as their practice week draws to a close they believe he's ready for any emergency scenario.

Osweiler, who was signed to a one-year deal Saturday, hasn't been asked to digest the entire playbook in recent days, but the Broncos have a framework in place for him if he has to spell Trevor Siemian for any reason against the Los Angeles Chargers.

"He's done a nice job in a short amount of time," Broncos offensive coordinator Mike McCoy said.

"As far as Brock, if he had to play, we have a package for Brock," Broncos coach Vance Joseph said. "There are certain things that he likes in Mike's system that we'll run with Brock if he has to go into a game to play."

Siemian won the starting job for the second consecutive season in a training-camp battle. Siemian and Osweiler also spent the 2015 season together with the Broncos, in Siemian's rookie year. They were the backups to Peyton Manning before Osweiler signed with the Houston Texans in March 2016.

Osweiler started seven games for the Broncos in 2015 in place of an injured Manning, and Siemian was the No. 2 quarterback for those games. But Osweiler's roots in the current offense date to 2012 -- his rookie year -- when McCoy was in the last season of his first coaching stint with the Broncos. McCoy was hired to be the Chargers' coach in 2013.

"[Osweiler has] done a good job of picking everything up," McCoy said. "He's complained a little to me about some words that I've changed, 'Hey, I left, we had to change something.' ... That's the game, we change, but he's a smart player, a talented player, I know all about him from when we drafted him and worked him out."

Osweiler will serve as the Broncos' No. 2 at least until Paxton Lynch recovers from a right shoulder injury he suffered in the Aug. 26 preseason game against the Green Bay Packers. Lynch had been wearing a sling since the injury but was not wearing one Friday as he watched practice.

Joseph has said he will decide who will be the No. 2 behind Siemian once Lynch has been medically cleared to return -- Lynch was expected to miss at least four games. Osweiler and Siemian have been early arrivals this week to study the game plan and give Siemian a chance to help Osweiler through the playbook McCoy put in during the offseason.

"There are a lot of new things, but there's some similarities," Osweiler said earlier this week. "I think we'll be able to put together a package come Monday night if something unfortunately was to happen to Trevor where I could step into the game and feel very comfortable."

"You love the way he comes out here and just works," McCoy said. "He was schooled the right way early on in his career. He's a pro."