PHILADELPHIA — Eight blocks north of where Philadelphia Eagles fans peered through a fence and shrubbery to watch Carson Wentz practice on Thursday, an entrepreneur had set up a card table along South Broad Street and piled it high with green “Wentz 11” T-shirts.
Wentz, the rookie quarterback from North Dakota State, was too busy working on his game to notice the fans — let alone to leave the team compound to buy a shirt.
Like his teammates, Wentz had to be at practice by 7:45 a.m. Thursday for a full day of game preparation until dinner was served at 5 p.m. Every N.F.L. quarterback follows a tight routine on a practice day, but Wentz’s schedule has been sliced into even thinner time segments than most.
Wentz, 23, has become a sensation here, in a city that remains as passionate as ever about football, even though the Eagles are…