Portis called 'very, very doubtful' for Sunday

Coach Jim Zorn all but ruled out running back Clinton Portis from Sunday's game against the Denver Broncos, saying Portis, who suffered a concussion Sunday, is "very, very doubtful." Portis, who did not attend practice, met with Zorn at Redskins Park before leaving to consult with a physician and review an impact test Portis underwent after he suffered the concussion early during Washington's 31-17 loss to the Atlanta Falcons. "I had him in my office this morning and he was still ... you could tell that he wasn't quite 100 percent," Zorn said. "We're not going to mess around with any concussion. He does have a concussion." Quarterback Jason Campbell has encouraged Portis to be careful with his health and return only when he believes he is completely at full strength. "You're talking about a serious injury. It's something dealing with the head," Campbell said. "Any time there's an injury