LANDOVER, Md. – The Eagles played all but one snap of the entire second half of Sunday's game at Washington with Halapoulivaati Vaitai at left tackle, replacing the injured Jason Peters.

Peters suffered a groin injury late in the second quarter and then was replaced by Vaitai to end the half. Peters came out for the first snap of the third quarter, but then went back to the sidelines.

Washington's stout defensive line, combined with a lot of blitzing, provided a handful for the Eagles, as expected. The running backs were asked to aid in pass protection, and, until Peters went down, Vaitai was used as an extra tight end/offensive lineman.

While the running game was up and down, and as Washington pressured Wentz and sacked him two times, the line held together enough to provide a pocket for Wentz, who threw for 307 yards and a pair of touchdowns. He helped his own cause by escaping pressure and keeping plays alive.

"It was tough. We had to have the win. It was frustrating to go out of the game," Peters said. "I tried to come back but I just couldn't go. I'm going to get it all treated up and get ready to get back out there."

When asked if he thinks he will play in Kansas City on Sunday, Peters did not hesitate.

"I'm going to play," Peters said. "There is no doubt in my mind I will play."

We'll see how Peters reacts during the course of the week, but the Eagles were able to adjust on the fly against a good Washington front seven on Sunday. Vaitai played left tackle and Lane Johnson stayed on the right side, working mostly against linebacker Ryan Kerrigan, who had three tackles, half a quarterback sack, and an interception return for a touchdown. Kerrigan moved from one side to the next, but mostly he worked against Johnson.

The Eagles helped at times with some chip blocking from the running backs, but Washington kept sending waves of blitzing defenders to try to rattle Wentz.

"I don't think the offense was great, but we did some good things," said running back LeGarrette Blount, who had 14 carries for 46 yards and a touchdown reception of 1 yard. The Eagles ran 24 times for 58 yards in the game. "We have a lot of room to improve."

"The important thing is that we made plays when we had to," said tight end Zach Ertz, who led the team with eight receptions for 93 yards. "We chipped away, especially in the fourth quarter. We got the win, and that's the important thing. That's all that matters."

The Eagles dressed seven offensive linemen, keeping guard Chance Warmack inactive. Peters' groin injury will be monitored during the week as the Eagles prepare to play in one of the league's most hostile environments, Arrowhead Stadium, on Sunday.