The new kids on the block have to grow up in a hurry.

Weston Richburg, a rookie, has started every game this season at left guard. Andre Williams, a rookie, has seen his workload increase every game and is bracing for his first NFL start at running back.

And now, at last, Odell Beckham Jr. — another rookie and considered the best of the bunch — is part of the plan, days away from his first taste of what an NFC East battle is all about.

“They’ve been doing it since Day 1,” Beckham said of Richburg and Williams. “I’m trying to get on their level. I’m trying to come back and join the party.”

If it’s a party, then these guys need to get carded at the door.

Beckham, 21, Williams, 22, and Richburg, 23, all played in big games before but not like this, not on a Sunday night in Philadelphia at a place called the Linc, where the Eagles reside and their fans are “relentless about their team,” said Victor Cruz, who has enjoyed some memorable moments in Philly. “They love their Eagles and they make sure they show it, especially verbally, when you’re walking onto the field.”

Of course this is about Cruz and Eli Manning and Jason Pierre-Paul and Antrel Rolle, but for the Giants, it is also so much about rookies and youngsters who must play older than their years and find poise beyond their experience.

Richburg will have to figure out how to deal with the Eagles’ three-man front on a defense that has produced eight sacks in the past two games.

Williams, subbing for injured Rashad Jennings, gets the call as a starter for the first time against a defense that has allowed 132 yards per game but is adept at creating turnovers.

Beckham, his hamstring woes finally behind him after an uplifting debut in last week’s 30-20 beating of the Falcons, now gets to run against a suspect Eagles’ secondary.

“Just as a competitor, the team and the coaches have put you in a position where that’s the role you have to play, so there’s no backing down from it,” Beckham said.

Rather than feel queasy about putting so much on first-year players, the Giants appear to be embracing the new blood about to be spilled in this fierce rivalry.

“I’m not necessarily worried,” Cruz said. “I think these guys understand the role that the play. I think they’re a talented crew that we have that are going to be playing as rookies and I think they get it.”

This could shape up to be one of general manager Jerry Reese’s best draft classes.

Williams had to carry the load last week when Jennings went down with a knee injury and, although he certainly did not run wild — 20 carries, 65 yards, one touchdown — he does have a muscular 230-pound body and a distinctive no-nonsense running style that endears him to offensive linemen.

“He’s gonna grab the ball and run hard,” center J.D. Walton said. “He doesn’t do much, he’s downhill once he gets it. Once he gets in the game you just reiterate ‘Hold the rock. There are grown men hitting you up here.’ Other than that you let him do his job.”

Getting the ball, over and over, is nothing new for Williams. As a true freshman at Boston College, he set a school record with 42 rushing attempts against Syracuse, gaining 185 yards. As a senior, he carried it 355 times, an Atlantic Coast Conference record.

“I think it’s gonna be a good chance to get lathered up earlier in the game rather than later,” Williams said. “I think I’m built to carry the ball as many times as necessary.”

Richburg, the second-round pick from Colorado State, already gives off a veteran’s aura. He has not allowed a sack or a hit on Manning since the second game of the season, and his performance against the Falcons was the second-highest grade of the week for all NFL left guards, according to Pro Football Focus.

Beckham enthralled the Giants and their home fans with his four receptions for 44 yards and his first touchdown.

Now Beckham, Williams and Richburg, all key components to the Giants’ offense, are coming for the Eagles.

“I have faith that management really drafted a great class and I knew we were gonna be able to contribute and I’m happy to see us all on the field,’’ Williams said. “I think we’re ready to go.”