ENGLEWOOD, Colo. — The Broncos made several transactions on Saturday, including activating linebacker Austin Calitro from injured reserve to the 53-man roster.

Calitro, who the Broncos acquired via trade in early September, has been on IR since Sept. 28. He suffered a hamstring injury early in the Broncos' Week 3 loss to the Buccaneers, but he was a key special teams contributor ahead of the injury.

According to a new NFL rule, there is no limit on the number of players a team can activate from IR. The Broncos previously activated A.J. Bouye, Dre'Mont Jones and DeMarcus Walker this season.

The Broncos also promoted running back Jeremy Cox from the practice squad to the active roster and placed fullback/tight end Andrew Beck on IR.

Cox has appeared in two games this season after being elevated twice from the practice squad to the game-day roster.

Beck, who practiced in a limited fashion on Wednesday and Thursday before being estimated as a non-participant on Friday, initially suffered a hamstring injury against the Patriots. He would be eligible to return after three weeks on IR.

The Broncos also elevated a pair of practice squad players to the game-day roster. Denver used a standard elevation on offensive lineman Patrick Morris and elevated wide receiver Fred Brown as a COVID-19 Replacement.

Teams are permitted to use two standard elevations each week. In that scenario, a practice squad player joins the team's game-day roster and is then eligible to revert to the practice squad without being exposed to waivers.

As a COVID-19 Replacement, Brown is also elevated to the game-day roster and can revert to the practice squad without clearing waivers. Unlike the standard elevation, though, there is no limit to the number of times a player can be activated to the game-day roster and revert to the practice squad. Each player is only eligible to follow that process via a standard elevation on two occasions.

The Broncos will be able to identify a player as a COVID-19 Replacement for as long as they have a player on the Reserve/COVID-19 list. The team placed Graham Glasgow on the list on Friday. The list is reserved for players who have tested positive for the virus or have been in close contact with someone who has tested positive.

Denver is not required to use their COVID-19 Replacement designation on Brown again next week if Glasgow remains on the list.