Dave Bergner has Eagles beer koozies and Eagles license plates. He has an Eagles mouse pad and Eagles bobbleheads and a sparkly Eagles Christmas wreath. His dog, a 15-year-old Chihuahua named Baby Girl, eats kibble from an Eagles dish. His garden gnome holds up a sign that reads “Fly Eagles Fly.”

You may be beginning to suspect that Mr. Bergner is a fan of the Philadelphia Eagles, who are set to face the Kansas City Chiefs in the Super Bowl on Sunday.

Fandom comes in all shapes and sizes, but Mr. Bergner’s love for his favorite team is mostly expressed through a collection of jerseys large enough to outfit an entire N.F.L. draft class.

He opened the door to his home in Bristol, Pa., on his 145th straight day wearing a different one of the team’s jerseys — a saga that has drawn the attention of thousands of fans on social media. The team’s playoff run had come nowhere close to exhausting his deep bench of team apparel.

“I’ve got 300 jerseys, and only two suits,” Mr. Bergner, 55, said.

For the past 13 years, Mr. Bergner has worn a different jersey for each day of the N.F.L. season, usually paired with a coordinating Eagles hat. (He has a measly 200 of those.)