The college student who accused Pittsburgh Steelers quarterback Ben Roethlisberger of sexually assaulting her said she didn't try to fight him off because he appeared to anger easily.

"I noticed throughout the night he kind of had like a short temper, like he would get really, like, defensive," she told police in her second interview with them on March 5, about 12 hours after she said the assault took place.

The accuser's interview is among more than 50 audio and video recordings released Wednesday by the Georgia Bureau of Investigation. The prosecutor determined there wasn't enough evidence to warrant criminal charges after the investigation concluded, and he said the woman ultimately asked him not to prosecute the quarterback.

The 20-year-old accuser was interviewed twice by police - the first time shortly after she made the accusation early March 5 in the small college town of Milledgeville, about 80 miles southeast of Atlanta. The second interview was about 12 hours later at the Milledgeville police station.

The woman sounded intoxicated in the first interview. She said she repeatedly told Roethlisberger, "I really don't think this is OK," but couldn't stop him from having sex with her in the bathroom of a bar.

The next afternoon, the woman went to the police station for a follow-up interview that was videotaped. She was calm and matter-of-fact when discussing the previous night, struggling to remember a few details but adamant that she had been raped by Roethlisberger.

The new videos include the first extensive comments by the woman that have been made public, though written statements she gave investigators have been released.

The quarterback was suspended for the first six games of the coming season, though commissioner Roger Goodell said he could reduce it to four games if Roethlisberger shows he is committed to improving his behavior.

Chargers. San Diego has signed three-time Pro Bowl left tackle Tra Thomas to a one-year contract.

The move apparently is insurance in case left tackle Marcus McNeill continues his holdout. McNeill, outside linebacker Shawne Merriman, and wide receiver Vincent Jackson are unhappy with their status as restricted free agents.

Thomas was a first-round draft pick of the Eagles in 1998. He signed with Jacksonville last year and played in just eight games.

Panthers. Weakside linebacker Thomas Davis has suffered a torn anterior cruciate ligament in his right knee for the second time in seven months, likely leaving Carolina without one of its top defensive players for the 2010 season.

The Panthers revealed Davis' injury Wednesday, a day after his knee buckled in a noncontact drill in a voluntary workout.

Rams. Wide receiver Isaac Bruce, whose four Pro Bowls firmly established him among the greatest players in St. Louis Rams history, retired Wednesday with a message for a struggling franchise that has hit bottom: Be proud of who you are.

"I would say, 'Watch your mouth,"' Bruce said of advice he would offer the Rams. "Watch what you say about the team and the organization. And expect great things to happen."

The 37-year-old Bruce is retiring after 16 seasons in which he set virtually every franchise receiving record.

Labor issue. The NFL Players Association has filed a complaint alleging that when the league renegotiated its contracts with television networks it deprived players of potential revenue.

The complaint says the league structured the contracts so it would be guaranteed money even if there is a lockout in 2011, in exchange for the networks paying less money before 2011, when the league would have to share that revenue with players. The union says that violates a 17-year-old agreement between the two sides.

The NFL calls the accusations "meritless" and says they contain "many inaccuracies."