Greenlaw will serve as one of the two starting inside linebackers in defensive coordinator Vance Joseph's scheme this fall. He will be joined by Alex Singleton (after Singleton returns from a broken thumb with a club) when the Broncos host the Tennessee Titans in their season opener on Sept. 7 ( view the full schedule ).

ENGLEWOOD, Colo. — Linebacker Dre Greenlaw pulled up while covering running back J.K. Dobbins in a 1-on-1 drill Thursday, then jogged off the field with the Denver Broncos' athletic trainers and didn't return to practice.