STANFORD — While news on the availability of running back Bryce Love must wait at least another 24 hours, Stanford coach David Shaw announced a change under center after Thursday’s practice.

Redshirt freshman K.J. Costello will replace incumbent quarterback Keller Chryst when the No. 18 Cardinal travels this weekend to face No. 25 Washington State on Saturday.

“We will start K.J. Costello this week and we’ll see how Bryce is feeling,” Shaw said. “Probably give him one more test tomorrow. If he passes that, then hopefully he’ll be up.”

Related Articles Pac-12 football: Cal, Stanford working to return but local health officials must sign off

Pac-12 football: Presidents may target Halloween for restart

Explaining the California restrictions governing practice for the Pac-12 teams: From a practical standpoint, it’s impractical

Coronavirus: Gavin Newsom says California has no restrictions preventing Pac-12 football’s restart

Hotline: With the Big Ten restarting, the Pac-12 stands alone. Whatever it takes, the conference must play this fall Chryst struggled last week at Oregon State, as the redshirt junior finished 16 of 33 for 141 yards and an interception.

He tossed a 3-yard touchdown to wide receiver JJ Arcega-Whiteside with 20 seconds left to escape with a 15-14 victory on the road, but Shaw mentioned earlier in the week how the job was open to competition.

Turns out Costello won out.

“That’s based on a week of practice,” Shaw said.

For the season, Chryst has completed 54.2 percent of his passes with eight touchdowns and four interceptions.

In limited time, Costello is 43 of 67 (64.2 percent) with four touchdowns and no picks.

He won the backup job over fifth-year senior Ryan Burns and took over on Sept. 23 against UCLA after Chryst left the game early with an injury.

Costello guided the Cardinal to a 58-34 victory over the Bruins, then got the nod a week later in 34-24 triumph over Arizona State while Chryst remained sidelined.

Both split time Oct. 7 at Utah, but it’s unclear whether Chryst will see the field on Saturday.

“I’m not commenting on that right now,” Shaw said. “KJ is going to start and we’re going to go up there and try to find a way to win.”

He added: “The bottom line for us is we’ve got to play really good football, we’ve got run the ball, we’ve got play great defense and be opportunistic in the passing game.”

Chryst began last season as the backup, before being promoted midway through and finishing 6-0 as a starter.

A co-captain at Stanford, he spent the offseason recovering from a knee injury suffered in the Sun Bowl on Dec. 30.

“Nobody has worked harder this entire offseason to come back from injury, get himself into position to play football for us,” Shaw said. “He’s still a leader on this football team. He still has a ton of respect on this football team. He still prepares like he always — and he’s gotta be ready. That’s just the bottom line. The way football is played, the way the game is played, he’s gotta be ready at any point and time to come in and help us to win.”