Oakland Raiders wide receiver Javon Walker could be released from the hospital, a day after he was beaten, robbed and left unconscious on a Las Vegas street after a night of partying, police said.

$3,000 in cash and $100,000 worth of jewelry were taken from Walker, who suffered "significant injuries," police said.

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.

"That's one of the first things we do, backtrack what he did and where he stayed," Nichols said, adding that the investigation was still in the early stages. "We knew there was a large amount of cash taken and some jewelry."

According to reports published yesterday in the Las Vegas Review-Journal, Walker visited a nightclub, Tryst, at the Wynn Las Vegas resort 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. She said there were no reports of a disturbance at the club.

Walker, 29, signed a six-year, $55 million deal with the Raiders after being released by the Denver Broncos in February.

Cowboys

Terrell Owens has been excused from the Dallas Cowboys' mandatory offseason minicamp this week while dealing with a personal family matter. Owens was at the Valley Ranch facility yesterday morning. But he left to catch a flight before the first of five scheduled practices during the three-day minicamp.

Jets

Jay Cross resigned as president after eight years with the New York team to accept a position as president of Related Hudson Yards.

Buccaneers

Chris Simms, a one-time starter who hasn't played in a regular-season game since rupturing his spleen in 2006, was a no-show for the start of the team's mandatory three-day minicamp.

Falcons

Atlanta released disgruntled safety Jimmy Williams, two years after trading up 10 spots to pick him in the second round of the NFL draft. Williams reported to minicamp 20 pounds overweight.

Packers

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

Elsewhere

Sen. Arlen Specter said he won't call for congressional hearings on the NFL's investigation of the Spygate scandal after previously threatening to do so.