Eagles coach Chip Kelly and his coaching staff can always find something wrong even in the best of wins.

"There is always something we can work on, somewhere we can improve," Kelly says.

The coach doesn't need a microscope to find fault in the Eagles' 33-10 road win over the Dallas Cowboys last week.

Despite the impressive win, its offense scored only one touchdown from the red zone.

"We're not going to make any excuses. We've got to make plays down there," Kelly said. "We're doing a really good job of moving the ball between the 20s, but what you really get judged on is when the ball is inside the 20."

Kelly's uptempo offense has raced its way inside the opponents' 20-yard line 46 times this season.

Of those 46 times, the Eagles have scored a touchdown or field goal 20 times each. They have turned the ball over five times and once turned it over on downs.

Against the Cowboys, last Thursday, the Eagles scored on their first red-zone drive when quarterback Mark Sanchez went in on a two-yard touchdown run. After that they settled for four Cody Parkey field goals.

"We all keep saying it, but we have to execute better," Eagles offensive coordinator Pat Shurmur said. "It's been that way."

Parkey has been nearly automatic.

In their last six games and in all four of Sanchez' starts, the Eagles have not had a turnover in the red zone, a big improvement from earlier in the year.

But Shurmur said the team is trying to stay aggressive, just like when it plays in the middle of the field.

Kelly said the Eagles spend as much time in practice working the red zone as they have all season and that's not going to change because of the struggles.

"You can't," he said. "If you do that you'll be short somewhere else. You just have to do a better job of executing when you're down there. We spend a lot of time there anyway."

NOTES: Running back/kick returner Chris Polk (hamstring) and Parkey (groin) were limited in practice, Wednesday. Kelly said he felt both would be fine.