JACKSONVILLE – Chris Ivory as expected won't play Sunday.

The news Friday regarding cornerback Prince Amukamara wasn't quite as expected, but he also won't play for the Jaguars in the second game of the 2016 regular season.

Ivory, the Jaguars' running back who missed this past Sunday's regular-season opener with a general medical issue, and Amukamara on Friday both were ruled out for the Jaguars' Week 2 game against the San Diego Chargers. Neither player will make the trip to San Diego, the team announced.

Amukamara's absence means veteran Davon House and rookie Jalen Ramsey likely will start at cornerback with fourth-year veteran Dwayne Gratz likely playing in nickel situations.

"We've got a plan with how we're going to jockey some things around, but look for Gratz to play a lot more," Head Coach Gus Bradley said Friday morning as the Jaguars (0-1) prepared to play the Chargers (0-1) at Qualcomm Stadium in San Diego, California, Sunday at 4:25 p.m.

Gratz, a third-round selection by the Jaguars in the 2013 NFL Draft, started 25 games in his first three seasons with the team. He has three career interceptions.

"He had a really good week at practice – really good week," Bradley said.

Bradley said Amukamara's absence means cornerback Josh Johnson likely will be active in a special-teams role.

Ivory, who missed last week's game after being hospitalized early Sunday morning, was released from the hospital Wednesday and returned to EverBank Field Thursday. His absence likely ensures that second-year veteran T.J. Yeldon will start for the second consecutive week.

Yeldon rushed for 39 yards on 21 carries against Green Bay Sunday, and Bradley said Denard Robinson will play an important role as a backup Sunday. Bradley also said third-team running back and kickoff returner Corey Grant could be involved offensively.

"You'll see Denard play, get more of the reps," Bradley said. "How much and what percentage, we'll take a look at that."

Ivory and Yeldon were expected to share carries for the most part this season. Bradley on Friday said while Ivory and Yeldon have different styles, the difference is not so great to dramatically alter the game plan in Ivory's absence.

"There are some subtle different styles, but not too far apart though – not too far," Bradley said. "It's not like you have a real speed-type guy and then a bigger bruiser-type. They're both pretty similar."

Also Friday, starting right tackle Jermey Parnell practiced full during the morning walkthrough and Leo end Dante Fowler also was listed as working full. Parnell missed Thursday's practice with a groin injury and Fowler missed Thursday with the flu. Bradley said the "arrow's up" on both players.

Reserve Patrick Omameh likely would play tackle if Parnell is unavailable.

"We've been really pleased with his progress," Bradley said of Omameh.