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."

In more bad news for the Eagles, tight end Brent Celek suffered a sprained left thumb. The team said that X-rays were negative.

In light of Brian Westbrook's recent concussions, Jackson's status will be monitored closely. Westbrook was knocked unconscious in a road game against the Redskins last month and missed the following two games. He returned against San Diego on Nov. 15 but suffered another concussion - one doctors have called "mild" - and has sat out two games since.

Westbrook only recently resumed conditioning and has been ruled out for Sunday's game in Atlanta.

"It wasn't quite like that one where [Westbrook] was knocked out like that," Reid said of Jackson's concussion. "We'll just have to see how he does here. We'll do a test on him and evaluate him."

LeSean McCoy has stepped up in Westbrook's absence. Jackson may be harder to replace, especially in returning punts. Jeremy Maclin was pressed into duty after Jackson went down and returned one punt for minus-2 yards. Maclin and Jason Avant were instrumental in the Eagles' comeback.

The 5-foot-10, 175-pound Jackson, though, leads the team in receiving yards and touchdowns and scored the Eagles' first touchdown on a 35-yard pass from Donovan McNabb. His only other reception came on the play in which he was injured.

The onside kick

Remember the "pickle juice" game in 2000 when Reid opened with an onside kick on the way to a 44-14 clubbing of Dallas?

Remember in 2003 when Reid tried the same trick again, but this time the Cowboys recovered the kick and returned it for a score on the way to a 23-21 win?

Well, Reid tried a game-opening onside kick again yesterday. This time the Eagles failed to cause a turnover but still came out victorious.

"I [shot] myself in the foot with the onside kick," Reid said. "That's my responsibility."

Kicker David Akers tried to hook a kick to his right, but the ball ricocheted off teammate Joe Mays' foot and into the hands of Quinton Ganther, who raced 25 yards down to the Eagles' 24. Four plays later, the Redskins scored for a 7-0 lead.

"It hit me right on my foot," Mays said. "I knew it was coming. I was trying to hurry up and get to my man before he got to the ball."

Akers said the ball was supposed to be farther out in front of Mays.

"I'd have to check it out on film, but live it seemed like if we had six inches in front of Joe it would have been a lot opener," Akers said. "They had two guys there against our five. That's pretty good odds. When Andy sees things like that, you just take the opportunity. We've always been aggressive and not just doing the standard. . . . By doing that, even though we didn't get it and gave up [a touchdown], it makes teams sit back on their heels."

No tackling dummy

Asante Samuel's tackling ability may turn Bronko Nagurski over in his grave, but the Eagles cornerback sure has a nose for the football.

Samuel snagged two interceptions yesterday, giving him seven for the season and tying him with former Eagles cornerback Troy Vincent for the most picks on a Reid-coached Eagles team. Vincent had seven interceptions in 1999. (The team record is 11, by Bill Bradley in 1971.)

Samuel's 27 interceptions are the most in the NFL since 2006.

"I try not to get caught up in all those things," he said. "I just try to go out and perform and just keeping doing what I do."

Samuel's interceptions came on back-to-back Redskins possessions before halftime. Both led to field goals and pulled the Eagles ahead of Washington, 16-14, heading into the locker room.

On the first pick, Samuel baited quarterback Jason Campbell into a bad throw and made a diving catch. On the second, defensive end Trent Cole pressured Campbell into a bad pass and Samuel again stretched out for the grab. He returned that interception 17 yards to the Washington 28.

Samuel was questionable heading into the game with a neck strain.

"I didn't know what to expect until I got on the field," said Samuel, who finished without a tackle and did not miss many. "I went out and gave it a shot and on the first contact it felt pretty good. I still feel a little something, but I'll roll with it."

Extra points

Akers' 32-yard field goal extended his streak of made field goals to 16 straight, one behind his career best of 17. . . . McNabb played in his 143d game with the organization, passing Ron Jaworski for most at quarterback. . . . The Eagles again were plagued by many penalties, incurring seven for 60 yards. . . . Guard Stacy Andrews was inactive for the second straight game. . . . The Eagles wore their black jerseys for the first time since Thanksgiving 2008, when they beat Arizona, 48-20.