The San Diego Chargers broke off talks yesterday with unsigned rookie quarterback Philip Rivers.

Rivers, chosen by the Giants with the No. 4 pick in the draft, was acquired by the Chargers in the deal that sent quarterback Eli Manning to New York.

"This is very disappointing and unfortunate," Chargers General Manager A.J. Smith said. "Negotiations broke down. . . . He had an offer until 5 p.m. Sunday. That was rejected, and now the offer is off the table."

Smith said the team's offer exceeds the deals for Robert Gallery and Larry Fitzgerald, who were selected with the second and third overall picks -- right before Rivers.

* TITANS: A second opinion confirmed that linebacker Peter Sirmon will need season-ending surgery to repair his injured left knee. A starter the past two seasons, he hurt his knee during a non-contact drill a week ago.

* GIANTS: New York waived backup running back and kick returner Delvin Joyce (James Madison) and Coach Tom Coughlin moved David Diehl to right tackle and made second-round draft pick Chris Snee the starter at right guard.

* EAGLES: Defensive end Jevon Kearse, who missed two games last season with a sprained left ankle, is listed as day-to-day after spraining the same ankle during practice.

The Eagles also said backup quarterback Koy Detmer will have arthroscopic surgery tomorrow to repair cartilage in his right knee and will miss a few weeks of training camp.

* RAIDERS: Linebacker Napoleon Harris injured his right knee during a drill in Napa, Calif., when he collided with teammates while blitzing during a pass play. He was taken to a nearby hospital for X-rays and an MRI exam.

* JETS: Running back LaMont Jordan (Maryland) returned to practice in Hempstead, N.Y., after being excused to deal with a personal matter.

* COWBOYS: Cowboys owner Jerry Jones said Quincy Carter, released Wednesday amid reports he failed a drug test, was sent a letter about his contract, but wouldn't say if the team was seeking to recover part of the bonus the quarterback received as the team's first pick in the 2001 draft.

* BRONCOS: Former running back Terrell Davis officially retired. Degenerative conditions in both knees led Davis, 31, to cut his career short after helping Denver to two straight Super Bowl titles. He last played in 2001.

* PANTHERS: Tackle Adam Meadows announced his retirement. Meadows, 30, signed a five-year, $15 million contract as a free agent in March, but had been kept out of most of training camp by shoulder problems. Meadows, who spent his first eight seasons with Indianapolis, has had two shoulder surgeries.

* DOLPHINS: Linebacker Zach Thomas, who had knee surgery a month ago, practiced for the first time since training camp opened. . . . Receiver David Boston had successful surgery to repair a torn tendon in his left knee, but he'll miss the entire season.