Broncos QB Trevor Siemian has a minor shoulder sprain, but team believes he should be able to play Sunday vs. Chargers, per source.

Related players: Brock Osweiler, Paxton Lynch

Siemian returned to the game after injuring his shoulder and giving way to Osweiler late in the second half.

Coach Vance Joseph said QB Trevor Siemian would “probably” have an MRI on his shoulder.

Related players: Brock Osweiler, Paxton Lynch

Siemian tried to make a tackle on a pick-six late in the first half of Sunday night's game and came down on his left shoulder, the same one he had offseason surgery on. Siemian gave way to Osweiler but did return in the second half.

It’s officially official. Brock Osweiler passed his physical Monday morning and signed a one-year contract for the veteran’s minimum of $775,000 to return as a backup quarterback to Trevor Siemian.

Osweiler will practice with the team Monday.

Osweiler’s return, a surprise to many, caps a wild 18 months that took from Denver to Houston as a handsomely paid free agent ($72 million for four years), then Cleveland via trade and now back to Denver.

Related players: Paxton Lynch

Osweiler will assume the No. 2 quarterback spot in place of Lynch, the 2016 first-round pick who is nursing a shoulder sprain that will keep him out at least the first few weeks of the season, and probably longer. Lynch has been wearing a sling around his right him — his throwing arm — and will return when healthy, Elway said.

Broncos beat reporter Mike Klis says he talked to two player sources who said they expect Broncos to zero in on QB Brock Osweiler once he's officially available. Osweiler was cut by the Browns, after being traded by the Texans, who signed Osweiler as a free agent after he spent the first four years of his career in Denver.

UPDATE via Adam Schefter on Twitter: "Pending Monday's physical, Broncos will sign their former QB Brock Osweiler on a one-year, $775,000 deal."

Related players: Trevor Siemian, Demaryius Thomas, Emmanuel Sanders

Osweiler had his best season in Denver in 2015, throwing for a career-high 7.15 ypa with ten touchdowns and six interceptions in eight games. Siemian should still be the starter moving forward, but it would give the Broncos a familiar back-up and another option if Siemian plays poorly. Current back-up Paxton Lynch is expected to miss at least a couple weeks with a shoulder injury.

The good news is Broncos quarterback Paxton Lynch won’t need surgery.

The bad news is, he’s still going to miss some time, which means they may have to make a short-term roster move.

Related players: Trevor Siemian, Kyle Sloter

He's expected to miss a few weeks according to the story. Sloter is the only other active QB on the roster and the team is expected to bring in another arm to play in preseason Week 4.

Trevor Siemian won the Denver Broncos' quarterback battle with his steady play.

NFL Network Insider Ian Rapoport reported Broncos coach Vance Joseph will name Siemian starting QB at his Monday news conference, per a source informed of his decision.

Related players: Paxton Lynch

Siemian has been much more consistent guiding the Broncos' offense than former first-round pick Paxton Lynch. During the 2017 preseason, Siemian has completed 14-of-18 passing for 144 yards, 8.0 yards per attempt, with one touchdown, zero interceptions at a 118.5 passer rating. Lynch, meanwhile, has struggled to read defenses while going 15 of 22 for 81 yards, 3.7 YPA, zero touchdown passes or interceptions and a 74.2 passer rating. We have Siemian ranked 25th on our list giving him lower-end QB2 and streaming value.

The clock is most certainly ticking on the Denver Broncos' impending decision at quarterback.

In fact, either Trevor Siemian or Paxton Lynch could be named the Broncos' starter a week from now after all promises are kept in the coming days. Broncos coach Vance Joseph has often used the words "fair" and "open" to describe the competition.

The story added that this week, Siemian and Lynch will go through joint practices with the San Francisco 49ers, and then Lynch will get the start against the 49ers on Saturday night. Then, in theory, all of the boxes will have been checked, time has been split evenly through spring into summer and each quarterback will have had the opportunity to open a game with the starters.

It was interesting to hear Broncos WR Emmanuel Sanders describe the new version of offensive coordinator Mike McCoy's system.

"We've got this new offense with Mike McCoy," Sanders said. "We're going to be throwing the ball around so my conditioning has to be up and I've been working on that."

Related players: Demaryius Thomas, Paxton Lynch, Trevor Siemian

An evolved Sanders and a healthy Demaryius Thomas could go a long way toward bolstering confidence in the Broncos' passing game. Like Sanders himself, it could look quite different in 2017, the story said. Sanders also talked about the different styles the QBs have, saying Lynch likes to throw the deep ball while Siemian seems more practical.

When the Denver Broncos open their season on Sept. 11, either Trevor Siemian or Paxton Lynch will be the starting quarterback.

A few things have to happen before coach Vance Joseph makes the call. Each quarterback has some fine-tuning and studying to do to learn the new offense. And each must be careful in how he spends the rest of the summer vacation.

"As I've said to all the players, not just [the quarterbacks]: Learn the system. That's the most important," offensive coordinator Mike McCoy said before the Broncos adjourned for their summer break. "I consistently say, 'When you leave this office, you have to study.' Everybody has talent; the key is learning [the plays] and knowing what to do. Everybody, including [the quarterbacks], has to put themselves in a position to come back here for camp ready to compete for a job."

Siemian and Lynch, along with the team's running backs, wide receivers and tight ends, will have a Manning-esque passing camp in Los Angeles in the coming days. Wide receiver Demaryius Thomas said at minicamp last month that "it's a priority for us to get together," the story went on to say.