Raiders’ Walker remains hospitalized after robbery

Oakland Raiders wide receiver Javon Walker remained hospitalized with a concussion and a battered face Tuesday, one day after he was beaten, robbed and left unconscious on a Las Vegas street following a night of partying.

Police said a large amount of cash and some jewelry were taken from Walker, who suffered “a moderate concussion and significant injuries to his face.”

Police Lt. Clinton Nichols said detectives are retracing Walker’s activities in the hours before he was found injured Monday morning on a street off the Las Vegas Strip.

According to reports published in the Las Vegas Review-Journal, Walker visited a nightclub, Tryst, at the Wynn Las Vegas resort on Saturday night. He spent Sunday night at another club, Body English at the Hard Rock hotel-casino, before leaving about 3:30 a.m. Monday, according to casino spokeswoman Dorian Cantrell.

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The Atlanta Falcons released disgruntled safety Jimmy Williams, two years after trading up 10 spots to pick him in the second round of the NFL draft.

Williams has only seven career starts in 27 games.

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Wide receiver Terrell Owens was excused from the Dallas Cowboys’ mandatory minicamp this week while dealing with a personal family matter.

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Sen. Arlen Specter (R.-Pa.) said he won’t call for congressional hearings on the NFL’s investigation of the Spygate scandal after previously threatening to do so.

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Green Bay Packers running back Ryan Grant sat out a mandatory minicamp practice as he and the team continue to work on a new deal.

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Quarterback Chris Simms, who hasn’t played in a regular-season game since rupturing his spleen in September 2006, was a no-show for the start of the Tampa Bay Buccaneers’ mandatory three-day minicamp.

COLLEGE BASEBALL

Fresno State beats North Carolina, 5-3

Alan Ahmady hit the go-ahead single in the fifth inning and Fresno State defeated North Carolina, 5-3, at the College World Series in Omaha.

The Bulldogs (44-29) need one more win to reach the best-of-three championship round that starts next Monday. North Carolina (52-13) will meet Louisiana State in an elimination game Thursday. The Tigers (49-18-1) stayed alive with a 6-5 victory over Rice.

TENNIS

Davenport withdraws because of knee injury

Lindsay Davenport withdrew from the International Women’s Open in Eastbourne, England, because of a knee injury, but she expects to compete at Wimbledon.

“I am very disappointed to be unable to compete here, but I unfortunately injured my right knee in practice over the weekend and was unable to recover in time for today’s match,” Davenport said in a statement. “I look forward to it getting better and resting and, of course, being able to play next week at Wimbledon.”

Nicole Vaidisova, a Wimbledon quarterfinalist last year, lost in the first round, 6-2, 6-4, to Olga Govortsova.

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Top-seeded Radek Stepanek beat John Isner, 6-3, 6-2, to advance to the second round of the Wimbledon tune-up tournament at Nottingham, England. He will next play Vincent Spadea, a 6-1, 7-5 winner over Alexander Slabinsky.

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Top-seeded David Ferrer beat Massimo Dell’acqua, 6-2, 7-6 (3), to advance to the quarterfinals of the Ordina Open in Den Bosch, Netherlands.

JURISPRUDENCE

Former Bears player acknowledges guilt

Former Chicago Bears fullback Roland Harper admitted he acted as a front man in a fraud involving a $1.5-million Chicago Public Schools landscaping contract reserved for minority firms. Prosecutors are recommending about 16 months in federal prison

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Seattle Seahawks linebacker Lofa Tatupu entered a plea of not guilty to charges of driving under the influence of alcohol.

MISCELLANY

Report: Billups won’t be on Olympic team

Detroit Pistons point guard Chauncey Billups pulled himself out of consideration for a spot on the USA Basketball team in the Beijing Games, a person in the NBA told the Associated Press.

The person spoke on the condition of anonymity because he did not want to speak publicly for Billups.

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Scott McGihon of Bermuda Dunes, Matt Hoffenberg of Simi Valley and Alex Kim of Fullerton shared medalist honors at the 97th California Amateur Championship at Lakeside Golf Club in Burbank and Oakmont Country Club in Glendale. They finished with two-day totals of 140.

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Ten-year-old Allisen Corpuz of Kapolei, Hawaii, shot a 15-over-par 88 in the second round of the U.S. Women’s Amateur Public Links Championship in Erin, Wis.