Brandon Meriweather comes up in run support to try to tackle Minnesota’s Adrian Peterson. Meriweather did not play in the first Eagles-Redskins game this season. (Toni L. Sandys/The Washington Post)

Defensive coordinator Jim Haslett said Thursday there is “a lot” the Washington Redskins can learn from their season-opening loss to the Eagles about how to deal with Philadelphia’s offensive approach.

“There’s a lot to learn from that one,” Haslett said at Redskins Park. “Obviously we’ve got to do a much better job in the run game. Overall, I think you have a better understanding of what they’re doing scheme-wise. That area will help us also.”

The Eagles had a highly productive first half on offense on their way to racing to a 33-7, third-quarter lead on opening night at FedEx Field. They won, 33-27, in Chip Kelly’s NFL head coaching debut. The teams play again Sunday at Philadelphia.

Redskins players said earlier this week they’d felt properly prepared for Kelly’s uptempo offense when they readied for the opener. But that didn’t seem to help in the first half on Sept. 9, and players said they will be more familiar this time with what the Eagles are trying to do on offense.

“The pace is the pace,” Haslett said. “You’ve got to deal with it. We’ve seen a lot of that this year, obviously from Denver, San Diego and a bunch of teams. So that should help us also.”

Haslett said it should help to have safety Brandon Meriweather in the lineup. Meriweather was hurt and missed the opener.

“You can see Brandon is getting his legs under him,” Haslett said. “He’s starting to feel good. He’s starting to move well. You know, coming back from the [knee] injury a year ago, you can see he’s starting to get better and better every day when he’s out on the practice field. So I think it will help immensely.”

Have a Redskins question? E-mail Mike Jones at with the subject line “Mailbag question” for him to answer it in The Mailbag on Tuesdays.

What’s ahead:

● Defensive coordinator Jim Haslett says there’s another 7-0 run in the Redskins.

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Post Sports Live, Can Redskins go on a run?

The Redskins head into Sunday's game against the Eagles with a 3-6 record. Last season at 3-6, they went on a run and made the playoffs. Can the team do it again? (Post Sports Live/The Washington Post)