LINCOLN, Neb. — Running back Ameer Abdullah left No. 17 Nebraska’s game against Purdue on Saturday with a mild sprain and bruise to his left knee.

Abdullah was hurt as he recovered Tommy Armstrong Jr.’s fumbled snap at the Purdue 1-yard line on the Huskers’ second possession. Abdullah returned two series later and lost 5 yards on his only carry.

Coach Bo Pelini said he was “optimistic” Abdullah would be able to play in the Cornhuskers’ Nov. 15 game at Wisconsin. The Huskers are off next week.

Abdullah has run for at least 200 yards in a nation-leading four games. He has 1,250 yards this season and is the only player in Nebraska history to rush for more than 1,000 yards in three straight years.

Kansas

Neal, Stowers sent to hospital : In Waco, Texas, Kansas cornerback Derrick Neal and defensive lineman Keon Stowers were taken to a hospital after getting injured in the first half against No. 12 Baylor.

Stowers had his head immobilized on a stretcher after a play in the second quarter. He flashed a thumbs-up sign as the cart took him off the field.

Neal’s head collided with the knee of Baylor’s Devin Chafin when he was covering a kickoff in the first quarter. Neal was placed in a neck brace before walking to the cart.

A Kansas athletic spokesman said Stowers was able to move his extremities. There were no other specifics on the players’ injuries.

Interim coach Bowen changes play-callers: Kansas interim coach Clint Bowen is going with a new play-caller for the final five games of the season.

Bowen announced before Saturday’s game at No. 12 Baylor that wide receivers coach Eric Kiesau had been promoted to co-offensive coordinator alongside John Reagan and would call plays from the sideline against the Bears.

Former coach Charlie Weis, who was fired Sept. 28 after a 23-0 loss to Texas, hired Reagan in the offseason after handling play-calling duties himself for his first two seasons with the Jayhawks.

Reagan was brought in to implement a spread offense after Kansas struggled in Weis’ pro-style attack.

Kansas went into the game ranked last in the Big 12 in scoring offense, total offense and pass offense.

Washington State

Quarterback Halladay taken off field on stretcher: In Pullman, Washington, Cougars quarterback Connor Halliday, the nation’s passing leader, was knocked out of Saturday’s game against Southern California with what appeared to be a serious injury.

It appeared that two players crashed into Halliday after he threw a pass late in the first quarter. The senior writhed on the ground, was strapped onto a stretcher and driven off the field in a cart.

Washington State officials did not immediately disclose the extent of Halliday’s injury.

Coming into the game, Halliday led the nation with 3,833 passing yards. He had 32 TD passes and 10 interceptions. Halliday had thrown for 40 yards and an interception against Southern California when he was injured.

Penn State

Four players cited in egg-throwing: In State College, Pennsylvania, four Penn State football players were cited after what officials call an egg-throwing incident at a campus building the night before Halloween.

Team officials confirmed that center Wendy Laurent, defensive end Garrett Sickels, tight end Brent Wilkerson and reserve safety Anthony Smith were involved in Thursday night’s incident at Beaver Hall.

According to Centre County court records, all were issued non-traffic criminal mischief citations.

Coach James Franklin said after Saturday’s game against Maryland that the situation would be addressed with the administration, the players and their families.

He said egg-throwing was “far down the totem pole” among the problems in college athletics, but “It still needs to be fixed. I can guarantee it will be.”

On Saturday, Laurent started, Wilkerson had some playing time at fullback and Sickels had a sack.