doubtful

Khalil Mack unspooled his elbow wrap and removed his brace as he spoke to reporters Thursday for the first time since sustaining his injury last month. Does Mack, the Chargers’ star outside linebacker, believe he can play Sunday against the Indianapolis Colts?

“For sure,” he said.

That will ultimately be up to general manager Joe Hortiz and coach Jim Harbaugh, Mack said. The 34-year-old, in his fourth season with the Chargers, said he’s “slightly ready to go” if his number is called upon, just days after his 21-day activation window opened Tuesday.

Mack was listed as questionable Friday, along with wide receiver Derius Davis, linebacker Troy Dye, offensive lineman Jamaree Salyer and linebacker Denzel Perryman. Running back Hassan Haskins also was listed as questionable after practicing all week.

Offensive tackle Joe Alt (ankle) was listed as doubtful for Sunday. Alt practiced Thursday and Friday.

“I’m not going to say I can or can’t,” Alt said Wednesday when asked whether he’d play. “We’re just going to continue to progress and see where it means for me going forward.”

Defensive back Elijah Molden (thumb) did not practice all week and was also listed as doubtful. Wide receiver Quentin Johnston (hamstring) is set to play after missing last week’s win over the Miami Dolphins.

Centre Garry Ringrose is out of the British and Irish Lions’ first Test against Australia next Saturday, while hooker Luke Cowan-Dickie is a major doubt, says head coach Andy Farrell.

Ringrose, 30, was in strong contention to start the first Test in Brisbane but suffered a concussion in the Lions’ victory over ACT Brumbies on Wednesday.

Farrell confirmed the Ireland centre, who scored and was a standout performer against the Brumbies, would be available for the midweek game against First Nations and Pasifika XV on 22 July, before the second Test in Melbourne on 26 July.

Scotland’s Huw Jones delivered another impressive performance on Saturday in an eight-try win against the AUNZ Invitational XV and now looks certain to start the opening Test at outside centre.

The 31-year-old has started his past two Lions games alongside Scotland and Glasgow Warriors centre partner Sione Tuipulotu, which could now be Farrell’s first-Test midfield combination.

Ireland utility back Jamie Osborne was called up to the Lions squad on Thursday as “training cover” for Scotland full-back Kinghorn and is comfortable playing at centre or full-back.

“Garry had a delayed reaction. He had headaches for a day and it carried on for the next day so he went through concussion protocols and failed those,” Farrell said.

“Unfortunately for him and for us he’s [out for] 12 days, so that puts him out of the first Test and back in for the midweek game before the second Test.

“You don’t mess around with these things and it is unfortunate for him and everyone else. He’s in good spirits anyway, so we crack on.”