Posted by ESPN.com's Matt Mosley

I'm sitting on a plane at LaGuardia Airport, so this will be brief. I came away from Sunday's game with a belief that the Giants' defense will be dominant this season. They didn't have starters Michael Boley, Aaron Ross and nickel corner Kevin Dockery, but it didn't matter in a 23-17 win over the Redskins that should not have been that close. Here are some quick hits on what I took away from Sunday's game:

• Giants cornerback Corey Webster is an elite player who doesn't receive enough attention. The interception he made on the sideline was brilliant in that he somehow avoided contact with the receiver and then managed to keep his feet down. There are lots of receivers in this league who don't make that catch.
• Redskins running back Clinton Portis said Jim Zorn's offense would be "bombs over Baghdad," but that never materialized. Jason Campbell only took one deep shot, and he overthrew Santana Moss. Once the Giants realized the Skins were not going to throw the ball downfield, it made things a lot easier on them. I was impressed with how Campbell kept his composure when everything was falling apart in the first half.
• Campbell can't check into a running play on third-and-8. He knows that, but it still happened. He lost track of what the down and distance was. He and Zorn have to do a better job communicating.
• I want to call LaRon Landry an elite safety, but he does too many foolish things for me to say that. He made a brilliant, diving play on the ball that DeAngelo Hall picked off. But he also had a dumb 15-yard penalty for a late hit and he's way too concerned with going for the big hit.
• At times, I thought Stephon Heyer looked OK at right tackle, but he got crossed up by Justin Tuck a couple times when the Skins had a chance to get back in the game.
• Without a running game, Campbell's not going to have a chance. After that first play, the Giants effectively took any semblance of the running game away from the Skins.
• I know that Boley's going to start, but Chase Blackburn is a really good football player. Every time there was a huge pileup, he seemed to be in the middle of it. General manager Jerry Reese and his staff have done a great job of creating depth in key areas. Dallas hasn't done that, and the same thing goes for the Redskins.
• Hope you guys saw that quote Brandon Jacobs gave me Sunday evening. He thinks the Cowboys should've scheduled the Lions for their first regular-season game in Cowboys Stadium.

OK, I've been asked to turn off my cell phone. Let's talk when I land -- in about three hours or so.