ST. LOUIS — Dallas Cowboys safety Roy Williams broke his right forearm for the second time today in his first game back from the previous injury, and owner Jerry Jones said he'd miss the remainder of the season.

Williams, who has made the past five Pro Bowls, was hurt midway through the third quarter of a 34-14 loss to the St. Louis Rams. It was not clear how he was hurt.

During the game Williams' injury was addressed only briefly. A Rams spokesman, relaying information from the Cowboys, said then that Williams' status "was unknown at this point."

Jones brought up Williams' injury while discussing the future after the Cowboys lost for the third time in four games. Jones said in times of adversity, he compiles lists.

"It's not a good thing when Roy Williams, our safety, makes the list and is out for the year," Jones said. "That's not a good thing to put on that list.

"The rest of the guys in this locker room, including the coaches and me, aren't out for the year."

Williams broke the forearm while making a special teams tackle against the Eagles in the second game of the season. He had missed three games.