Javon Walker has a first-degree shoulder separation and will likely be listed as questionable for Sunday, when the Broncos (8-6) host the Cincinnati Bengals (8-6) in a game that could go a long way to determining a wild-card spot. Walker suffered the injury in the first half of last Sunday's 37-20 win at Arizona. He finished the contest but did not have a catch in the second half. "He (Walker) had a first-degree separation of his shoulder and took a shot, I believe, in the second quarter," Broncos coach Mike Shanahan said. "I think it's a little bit sore." Walker saw his production drop once Cutler assumed the starting quarterback position against Seattle on December 3. But prior to Walker's injury, the duo hooked up five times for 84 yards and a touchdown against Arizona.