The Detroit City Football Club got prominent billing in Detroit's bid for Amazon's second headquarters in what appears to be a targeted appeal to younger soccer fans occupying the ranks of the online retail and tech giant's Seattle headquarters.

In the community and quality of life section of a nine-page formal response to Amazon's request for HQ2 proposals, the Hamtramck-based semi-professional soccer team is mentioned by name, while Detroit's four long-established professional sports teams are not.

"All four major sports teams now play downtown within a four-block radius," the Amazon bid summary reads. "Detroiters also treasure the Detroit City Football Club, a semi-professional soccer team that crowdfunded their renovation of a historic 7,000-seat stadium."

In a 242-page spiral-bound book businessman Dan Gilbert's companies published for the Amazon HQ2 bid, Detroit City Football Club got a two-page photo spread of a player slapping high-fives with the club's diehard fans who packed Hamtramck's Keyworth Stadium last season.

Sean Mann, co-owner of Detroit City FC, said he was contacted by officials in Mayor Mike Duggan's office when Amazon bid was being drafted in late September and early October. The city officials were seeking facts and information about the club to include in the pitch to Amazon, he said.

"My understanding is there's a perception that the Amazon folks — because they're from Seattle — have a leaning toward soccer as an amenity in a city," Mann said Wednesday.

Gilbert, founder and chairman of Quicken Loans Inc., has said his real estate and development team at Bedrock LLC and Rock Ventures LLC studied the online retail behemoth closely in an effort to tailor the Detroit bid to the company's employee culture.

Gilbert is one of the backers of a bid to bring a Major League Soccer expansion team to Detroit's Ford Field. That bid for an MLS expansion team starting in the 2020 season was in doubt Tuesday after news leaked about Nashville scoring a franchise.

Seattle already has an MLS team, the eight-year-old Seattle Sounders FC, which won the MLS Cup in 2016.

"Part of this bid is how do you create a city that attracts the millennial demographic," Mann said.

Detroit City FC just completed its sixth season and second year at Keyworth Stadium, where the club averaged 6,000 fans per game this past season.

Mann said the team is happy to be part of the conversation of Detroit's turnaround.

"It's a sport that appeals to the millennial demographic that economic development folks talk about," Mann said. "It's flattering that we're seen as an asset to the community."