“I certainly appreciate the support,” Jones said. “Just running out here for the first time was exciting in front of these fans.”

The finale of the eight-play opening drive was the touchdown pass to Gallman, who was wide open coming out of the backfield and provided an easy target. Gallman softened the loss of Barkley with his own competent play.

“I was going to show everybody that even though Saquon was out, I’m in and I would do whatever it takes to win,” Gallman said.

Jones also looked good carrying the ball again, especially on a scramble late in the third quarter in which he evaded two defenders behind the line of scrimmage, spun completely around, and ran for 16 yards on third-and-13, diving forward after he had secured the first down.

His mobility has proved to be better than Manning’s, and it is a reason the Giants and their fans are so excited about the future.

“He needs to learn how to slide feet first,” Engram said. “I love the fight. It was a huge play. But we’ve got to practice the slide.”

Washington Coach Jay Gruden, whose job security may be in jeopardy after such an atrocious start to the season, replaced his starting quarterback, Case Keenum, with the team’s own rookie quarterback, Dwayne Haskins, who was the No. 15 pick in this year’s draft.