JACKSONVILLE – What was likely all week became official Friday.

That's not good news for quarterback Gardner Minshew II – or the rest of the Jaguars' offense.

DJ Chark Jr., the Jaguars' leading receiver and biggest big-play threat in the passing game, will not play against the Oakland Raiders Sunday. He was ruled out Friday after not practicing this week because of an ankle injury sustained in a loss to the Los Angeles Chargers last Sunday.

With Chark out, the Jaguars' top three receivers entering Sunday are third-year veterans Dede Westbrook (55 receptions, 569 yards and two touchdowns) and Keelan Cole (17, 195, two) – and fifth-year veteran Chris Conley (38, 632, two).

"Obviously, we're looking for those guys to step up," Head Coach Doug Marrone said as the Jaguars (4-9) prepared to play the Raiders (6-7) at Oakland-Alameda County Coliseum Sunday at 4:05 p.m.

Chark, a second-round selection in the 2018 NFL Draft, has 67 receptions for 956 yards and eight touchdowns this season. All are team-highs.

"We were hoping [that Chark could play Sunday]; I think it's really close," Marrone said. "We made a decision to keep him here to give us a better opportunity for him to play next week."

The Jaguars' other two receivers – C.J. Board and Michael Walker – are undrafted rookies with a combined three receptions for 38 yards.

Chark was the lone player left on the Jaguars' game status report Friday. All other Jaguars players who were listed as injured this week – Westbrook (neck/shoulder), cornerback A.J. Bouye (calf), safety Ronnie Harrison (concussion), cornerback Tre Herndon (shoulder), center Brandon Linder (knee), center Cedric Ogbuehi (hand), tight end Seth DeValve (oblique), punter Logan Cooke (right hamstring) and defensive end Calais Campbell (back) – were listed as full and are expected to play.

Cooke and Ogbuehi were added to the report Friday. DeValve has been out four games and Harrison has been out the last two.

Marrone reiterated on Friday what he had said early in the week – that he has told players that the team's record means everyone associated with the team is auditioning for future jobs.

"That's the way I addressed it," Marrone said. "If you don't go in there and address the elephant in the room … really, what are you doing? In these types of situations, what we're in, it's not a secret. … The one thing about this league is nothing's for certain. If they're doing that (not giving maximum effort), it's going to jeopardize their living – whether it's coaches, myself or the players or anyone else around the program.

"I just try to be straight and honest, and that's the way it is."