Minnesota Vikings receiver Percy Harvin missed his third straight practice Friday with migraine headaches and is questionable for Sunday's game against Cincinnati. Coach Brad Childress wouldn't rule out Harvin for the battle between division leaders, but wasn't overly confident the explosive rookie would be able to play. "It's tough, certainly behind the eight-ball," he said. Harvin, dangerous as a receiver and kick returner, missed practice time before the San Francisco and Green Bay games earlier this season and responded well in both. Source: NFP