Cowboys' Williams misses practice Wednesday

Posted by ESPN.com's Matt Mosley

IRVING, Texas -- Cowboys wide receiver Roy Williams told reporters Wednesday that he hopes to play against the Chiefs, but he wasn't able to practice today. Williams injured his ribs in the fourth quarter of Sunday's 17-10 loss to the Denver Broncos.

Williams "They're OK," Williams said of his injured ribs. "They're painful, but they're good. ... I'm looking forward to playing this week."

Williams said the altitude in Denver and his asthma prevented him from re-entering the game when the Cowboys had two snaps from the Broncos' 2-yard line at the end of regulation. Williams had been criticized in some circles for not being able to play through the pain when quarterback Tony Romo desperately needed another option in the end zone.

"Don't act like I didn't want to be out there," Williams said. "I would go at Champ [Bailey]."

Asked about his role in the offense, Williams repeated his familiar refrain, "I'm just a coachable wide receiver."

He admitted to being concerned about his limited role in the offense, but he said he wouldn't complain a bit if the Cowboys were winning games. He reminded reporters that a 2-2 record "wasn't the end of the world." You'll recall that Williams spent a good portion of the '08 season on an NFL team that didn't win a single game. He seemed amused by all the panic over a .500 record after four games.

In other news, Marion Barber (left quad) was able to practice after having limited touches (1) in the second half of Sunday's game.