ENGLEWOOD, Colo. — Defensive end Dre'Mont Jones was among six Broncos who did not practice on Wednesday as the team began its on-field preparation for the Bengals.

Head Coach Vic Fangio said Jones, who suffered a foot injury against the Lions last week, would be "truly 50-50" to play against the Bengals if he had to list a status for him at this point in the week.

Inside linebacker Kenny Young (concussion), tackle Bobby Massie (hip), safeties Kareem Jackson (back) and Caden Sterns (shoulder/neck) and outside linebacker Stephen Weatherly (illness) also did not practice.

Fangio said Massie's received "kind of a rest day" and also noted that Weatherly's illness was not COVID-19 related.

Running back Melvin Gordon III (thumb/hip), defensive end Shelby Harris (ankle) and running back Javonte Williams (knee) were limited. Fullback/tight end Andrew Beck (elbow), outside linebacker Bradley Chubb (shoulder/ankle), wide receiver Tim Patrick (hand) and nose tackle Mike Purcell (thumb) were all listed as full participants.

If Young is unable to progress through the concussion protocol before Sunday's game, Fangio said the team could start Jonas Griffith at inside linebacker.

"That's who we put in there last week."

Fangio also disclosed that outside linebacker Malik Reed, safety P.J. Locke and running back Mike Boone had not yet posted a negative test. He said earlier this week that all three players, who have been placed on the Reserve/COVID-19 list, experienced some symptoms.