AP

Running back Ryan Mathews missed another practice on Friday and he’s been listed as questionable to play against the Broncos because of the ankle injury he aggravated in last weekend’s victory over the Bengals.

He’s got some company with that designation on the offensive line. Center Nick Hardwick returned to practice after suffering a concussion, but will need to get final clearance to play on Sunday. Right guard Jeromey Clary did not practice on Friday, his second straight day on the sideline after injuring his shoulder on Wednesday, and will also be a game-time decision along with right tackle D.J. Fluker. Fluker is expected to play despite an ankle injury.

Having all three in the lineup would obviously be ideal for the Chargers offense, although reserve center Rich Ohrnberger played well after Hardwick went out in the first quarter last week and had a key block to spring reserve running back for a game-icing touchdown in the second half.

Wide receiver Eddie Royal continued to miss practice with a toe injury and is questionable, although that’s been the case for several weeks and Royal has been in the lineup come gameday. Defensive tackle Sean Lissemore rounds out the list after being limited in practice all week by a shoulder injury.