The New York Giants got a scare Saturday when Plaxico Burress, one of their main offseason acquisitions, injured a knee 30 minutes into the team’s first preseason practice. Fortunately for the Giants and Burress, that’s all it was – a scare.

Coach Tom Coughlin said the initial diagnosis was a hyperextended knee and added: “If that’s what it is, then he’ll make good progress coming back.” He was back for the afternoon practice.

Burress, who spent his first five NFL seasons with Pittsburgh before signing a six-year, $25 million deal with New York, was one of several major free-agent signings the Giants made in the offseason in hopes of improving on a 10-22 record the past two seasons.

Cowboys

Nine-time Pro Bowl offensive lineman Larry Allen was placed on the physically unable-to-perform list after failing a conditioning test. Coach Bill Parcells didn’t say how long the veteran guard would be held out.

Panthers

Stephen Davis, recovering from microfracture surgery on his right knee, was unable to practice when the Panthers opened training camp.

Browns

The Browns have offered Kellen Winslow Jr. an opportunity to earn back the $2 million he forfeited after violating a “dangerous activities” clause in his contract and was hurt in a motorcycle accident. Owner Randy Lerner said the club had had “productive” meetings with Winslow, his family and agents Kevin and Carl Poston to resolve what has been a sensitive issue.

Jaguars

The team opened camp without first-round draft pick Matt Jones and with running back Fred Taylor ailing.

Lions

Detroit welcomed back injury-plagued wide receiver Charles Rogers and linebacker Boss Bailey, its first two draft picks in 2003.

Rogers, who broke his right collarbone twice and has played only five games, rolled after a catch and a chorus of teammates urged him to get up. He bounded to his feet and returned to the huddle.

Bailey, who missed all of last season with a knee injury, was limited to one practice.

Titans

Tennessee top draft pick Adam “Pacman” Jones missed a second straight day of training camp Saturday, and the team is starting to get impatient.

The Titans have said publicly they were determined to protect themselves in negotiating their contract with the cornerback picked sixth overall, the first defensive player taken in the draft.

Saints

New Orleans cornerback Mike McKenzie finally has the new contract he has sought since agreeing to be traded from Green Bay to the Saints last season.

His agent, Drew Rosenhaus, said Saturday that McKenzie and the Saints agreed to a deal worth about $22 million for the next five seasons.