ENGLEWOOD, Colo. — Four days after being carted off the field against the Packers, defensive end Derek Wolfe was back at practice for the Broncos on Thursday.

Wolfe, who injured his ankle in Green Bay but avoided a long-term injury, was a limited participant.

Safety Kareem Jackson and linebacker Josey Jewell both did not practice with hamstring injuries.

Head Caoch Vic Fangio said before Thursday's practice that Wolfe, Jackson and Jewell are all questionable for Sunday's game against the Jaguars.

The Broncos will release their official game designations on Friday.

Fangio said Jackson suffered his injury early in the Broncos' game against the Packers.

"Duke Dawson [Jr.] may have to play in the nickel there," Fangio said.

Outside linebacker Bradley Chubb (knee) was a full participant after being limited Wednesday. Guard Ron Leary was also a full participant. Leary did not practice Wednesday, but his absence was not injury related.

Running back Royce Freeman (shoulder), fullback Andy Janovich (pectoral), linebacker Joe Jones (triceps) and wide receiver Emmanuel Sanders (quadricep) all remained limited. Janovich and Jones have not yet played this season.

Tackle Garett Bolles was added to the injury report with an illness. He was limited Thursday.

Tackle Ja'Wuan James (knee) and cornerback Bryce Callahan (foot) remained out with longer-term injuries.