ENGLEWOOD, Colo. -- **The Broncos will have to make do up front without right tackle Menelik Watson.
Denver placed the five-year veteran on injured reserve Wednesday. He had missed the second half of the Week 6 loss to the Giants and all of the Week 7 game at Los Angeles because of a calf injury.
Watson is the second right tackle to go on injured reserve in the last month. Backup Billy Turner, who relieved Watson against the Giants, suffered a hand injury in that game and was placed on injured reserve a day later when he underwent surgery.
Donald Stephenson is listed as the second-teamer behind Watson, but he has not practiced since Oct. 19 because of a calf injury he suffered in practice. Rookie Elijah Wilkinson is listed as the third-teamer behind Watson and Stephenson.
With injuries to Watson, Turner and Stephenson, the Broncos started guard Allen Barbre at right tackle against the Chargers before Watson returned to the lineup a week later.
In the wake of Watson's move to injured reserve, the Broncos signed free-agent tackle Cyrus Kouandjio to the active roster.
Kouandjio is a fourth-year tackle who played three seasons with the Bills, who selected him in the second round of the 2014 NFL Draft. On June 15, 2017, he signed with the Lions, but he was released during roster cuts on Aug. 29.