In addition to Greenlaw and Strnad, Denver's remaining healthy inside linebackers are second-year player Levelle Bailey and three undrafted free agent additions: Karene Reid , JB Brown and Jordan Turner. This story will be updated.

These injuries should be concerning for all involved because the team is not loaded with depth behind them. The other inside linebackers on the roster as Justin Strnad and four undrafted free agents, Levelle Bailey, JB Brown, Karene Reid and Jordan Turner .

Let's get to the news and notes from Day 3 of Broncos camp. Sutton ended up being the first domino to fall when it comes to the group of core Broncos entering a contract year. Bo Nix's No. 1 target garnered a four-year extension worth $93 million with $41 million guaranteed.

Broncos linebacker Alex Singleton is set to miss some time after an injury in Monday's training camp practice.

Inside linebacker got his hand sandwiched between another tackler and ball carrier. He should only miss 7-8 days before the thumb is casted in a way he can play.

A behind-the-scenes look at Broncos training camp practice Monday with observations and analysis from The Denver Gazette: