Coyle suffered a broken bone in his back in addition to a concussion, Nick Wagoner of ESPN.com reports.
Coyle was placed on injured reserve Wednesday, meaning the linebacker will miss at least six weeks while he works to recover. He could be a candidate to return as the season progresses, but San Francisco won't make a definitive choice in the near future.
Coyle suffered a concussion Sunday against the Vikings, Matt Barrows of The Athletic reports.
Coyle started in place of Malcolm Smith (hamstring) in the season opener. If the 27-year-old is able to clear the concussion protocol in time to suit up for Week 2's matchup against the Lions, he stands once more to play a key role in the 49ers' defense.
Coyle will start Sunday against the Vikings, Matt Maiocco of NBC Sports Bay Area reports.
Coyle will replace Malcolm Smith, who is listed as doubtful with a hamstring injury. He'll be tasked with slowing down Vikings' running backs Dalvin Cook and Latavius Murray. The 27-year-old has plenty of experience, as he was a rotational linebacker for the 49ers in 2017, making 64 tackles in 16 games.
Coyle (knee) recorded three total tackles in Saturday's preseason game against the Colts.
Coyle had been out or limited since the early portions of training camp with a knee injury, but given that he was able to play 29 snaps and provide decent production for the 49ers on defense, it appears the linebacker is back to 100 percent.
Coyle (knee) was a limited participant in Monday's practice, David Lombardi of The Athletic Bay Area reports.
It was originally reported Sunday that Coyle would be held out of practice this week and also miss Thursday's preseason opener, but it looks like the linebacker could have a better outlook. Given that he was just a limited participant, it's still likely the 49ers hold Coyle out of Thursday's contest, but the fact that he is on the practice field suggests that he could be further along than originally thought.
|Bye: Week 11|
|12||11/25/18||@ TB||1:00 pm|
|13||12/2/18||@ SEA||4:25 pm|
|17||12/30/18||@ LAR||4:25 pm|
|2017||San Francisco 49ers||16||64||38.0||26||0.5||0||0||0.0||0||0||1|
|2018||San Francisco 49ers||1||6||4.0||2||0||0||0||0.0||0||0||0|
|Year||Team||G||Fum||Lost||Fum Forced||Own Rec||Opp Rec||Yds||Tot Rec||TD|
|2017||San Francisco 49ers||16||0||0||1||0||0||0||0||0|
|2018||San Francisco 49ers||1||0||0||0||0||0||0||0||0|