Reich said his quarterback also scored high in maturity, toughness and charisma. Gruden said Wentz has "five-star intangibles," and referenced his faith, work ethic, leadership and love of the game.

As for physical qualities, that 5'8", 125-pound freshman in high school now is a 6'5", 237-pound freshman in the NFL. His 40-yard dash time of 4.77 seconds was tied for second fastest among quarterbacks at the combine. He has arm talent like Bruno Mars has vocal talent.

So the Eagles traded two first-round picks, one second-round pick, one third-round pick and a fourth-round pick to the Browns to acquire the second overall pick of the April draft, which they used to select Wentz.

Jon Durr / Getty Images

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The initial plan was for Wentz to sit behind Sam Bradford and Chase Daniel, but the Eagles prepared him as if he would play. They taught him about 70 percent of the offense at the initial rookie camp. They gave him the rest during OTAs. Then they went over everything again in training camp. By the time the preseason started, he had been through the entire offense three times.

Practice reps were split evenly between Bradford, Daniel and Wentz. So up to the point of the first preseason game, Wentz had as much teamwork as any of the other quarterbacks.

The Eagles knew what they had in Wentz before anyone else did. That's why they were receptive to the Vikings when trade talks for Bradford began. Without hesitation, they traded Bradford for a first-round pick and another conditional pick, leaving Wentz at the top of the quarterback depth chart.

In their first possession of the season a week ago, Wentz led the Eagles on a 75-yard drive that culminated with a 19-yard touchdown pass to Jordan Matthews. He threw another touchdown pass and ended the game with 278 yards in a 29-10 victory over the Browns.

On ESPN's Pardon The Interruption, former Eagles quarterback Ron Jaworski called it "the best performance I've seen by a rookie quarterback on opening day ever."

Like Wentz, Donovan McNabb was the second overall pick of the draft. He also was the last Eagles rookie quarterback to win a game in Philadelphia, and that was in 1999.

"I'm a fan," said McNabb, who now does radio for ESPN. "The things I saw in the first game were impressive. They brought the house to him a little bit, and they brought some four weak, four strong. He handled it well, got the ball out of his hands. It was a good start for his confidence and for the Philadelphia Eagles organization."

Perhaps the most impressive aspect of Wentz's performance was how unflappable he appeared. He said he has been overwhelmed by nothing.

"For some guys, learning a new system and the pro style things can be a lot," he said. "But going back to my college days, we did a lot of the same stuff. I was calling protections, making run checks, making audibles, playing under center. So that came pretty naturally."

There is a maturity about Wentz that is unusual for a rookie. Unlike many elite prospects who leave school after three years, Wentz stayed at North Dakota State for five. He will be 24 in December. He is older than 2015 first-round picks Jameis Winston and Marcus Mariota and nearly two years older than Goff.

Bears defensive coordinator Vic Fangio, who will try to kill the buzz about Wentz Monday night at Soldier Field, said he could not tell Wentz was a rookie by watching him play last week.

"He's very smart, very savvy, very poised and confident, and that came out in his first game," Fangio said.

"For some guys, learning a new system and the pro style things can be a lot. But going back to my college days, we did a lot of the same stuff."

— Carson Wentz

Wentz has benefited from having three quarterback specialists overseeing him. Pederson, an Andy Reid disciple, was a 12-year NFL quarterback who backed up Dan Marino, Brett Favre and McNabb, among others. Reich played behind Jim Kelly in Buffalo for nine seasons, and at one point held records for leading his college and pro teams to the biggest comebacks in history. He also has coached Peyton Manning and Philip Rivers. DeFilippo has been working with NFL quarterbacks for eight-plus years.

At times, all three coaches are in the quarterback room. DeFilippo focuses on the nuts and bolts of the position. Reich handles the big picture and schemes. Pederson oversees all of it.

Mitchell Leff / Getty Images

"[That is] a really big factor is this coaching staff," Tollner said. "It's very unusual that you have three excellent quarterback mentors in Doug, Frank and John. They all really understand the position mentally and physically. Carson is a really coachable guy, and they are really good coaches."

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Of course, coaching will take Wentz only so far. As the season goes on, he also will need a little help from his friends who share the huddle with him. The Eagles offense didn't produce many high-round fantasy football picks, but Gruden thinks the team has talent that can enhance its young QB.

"It's a good situation for him," he said.