I guess he separated his shoulder...didn't know that!
Yahoo! player update thingy wrote:Oct 20 Green Bay Packers WR Javon Walker (shoulder) practiced Wednesday, Oct. 20, but was not in pads. Walker is expected to play in Week 7. - from KFFL
Oct 19 After further evaluation, Packers team doctors have determined that Walker suffered a slight separation of his shoulder in the second quarter of Sunday's win over the Detroit Lions. The receiver, who also bruised his ribs and was in considerable pain after the game, is expected to be limited to non-contact drills most of this week, but he should be in the lineup against the Dallas Cowboys this weekend.
Advice: For now, consider Walker as day-to-day. He has 33 catches for 597 yards and five touchdowns in six games this season. - from Fanball