Two weeks after the star running back suffered his second concussion of the season, the Eagles' star wide receiver suffered his first. DeSean Jackson was knocked out of yesterday's 27-24 victory against Washington in the third quarter after he caught a 6-yard pass over the middle. Washington cornerback Justin Tryon was in on the tackle and Jackson remained on the field for several moments. He walked off the field under his own power but did not return. "He was just a little groggy," Eagles coach Andy Reid said, "but he was able to get up and get off the field and all that fairly quick."