WACO, Texas — Baylor quarterback Bryce Petty has two cracked small bones in his back.

Petty had an MRI on Monday, a day after taking an early shot to his back and playing only the first half of the 10th-ranked Bears’ season-opening 45-0 win over SMU.

The diagnosis was two cracked transverse processes, small bones that stick out from each side of a vertebra. Coach Art Briles said during the Big 12 coaches teleconference that the reigning confrence offensive player of the year is day-to-day.

Baylor hosts Northwestern State on Saturday.

Alabama

QB BATTLE CONTINUES: The Alabama quarterback competition continues, even though the opener was all Blake Sims.

Crimson Tide coach Nick Saban said the battle for the No. 1 spot remains open between first-game starter Sims and Jake Coker, who mostly watched second-ranked Alabama’s 33-23 win over West Virginia from the sideline. Expect Coker to get his first significant action Saturday against Florida Atlantic.

“I still don’t hesitate to say that there’s a quarterback competition,” Saban said. “In some way, we’ll probably try to play both quarterbacks in this game. I don’t know how and when I figure it out I’m probably not going to tell” the media.

“And I don’t know that it’s that important, to be honest with you,” Saban added.

Sims received decent reviews from his first game as a starter. He completed 24 of 33 passes for 250 yards with one interception on an ill-advised downfield throw and had time management issues that forced a couple of second-quarter timeouts.

Texas

ASH WILL SIT OUT SATURDAY: Texas quarterback David Ash, who missed most of last season with concussion symptoms, will not play this week against BYU after getting headaches and feeling dizzy in the hours following the Longhorns’ season-opening win over North Texas.

Ash took several hard hits to the head in the 38-7 win, but coach Charlie Strong said Ash showed no symptoms during the game. Ash called staff to report his symptoms about 90 minutes after the game ended, and the medical staff brought him in for evaluation.

“It shows his toughness. I know how important this football team is to him,” Strong said.

Sophomore Tyrone Swoopes will start against the Cougars.

Florida State

NO WORD ON CASHER: Florida State’s Chris Casher remains listed as the starting outside linebacker on the depth chart, but coach Jimbo Fisher said his status remains unknown.

Fisher said the top-ranked Seminoles are waiting for information on the sophomore.

Casher was pulled from the lineup due to an “academic-related matter” shortly before Florida State’s 37-31 victory over Oklahoma State on Saturday. He played in 13 games last season, had 25 tackles, including five for loss and was expected to fill the pass-rushing role vacated by Christian Jones.

Monday’s game

Louisville 31, Miami 13: In Louisville, Kentucky, Dominique Brown’s 15-yard touchdown run in the third quarter and Gerald Christian’s 10-yard TD catch late in the fourth followed Louisville’s big defensive performance that overwhelmed Miami.

The victory provided a successful ACC debut for the Cardinals and to Bobby Petrino’s second stint at the school.

Around the nation

Nebraska defensive end Randy Gregory is doubtful for this week’s game against McNeese State because of a knee injury. ... Cyler Miles will start at quarterback for Washington in its home opener Saturday against Eastern Washington, replacing Jeff Lindquist. ... Virginia coach Mike London said he’ll decide Saturday whether Greyson Lambert or Matt Johns starts at quarterback against Richmond.