TMRW Sports taps Populous, Transwestern to build NFL Flag stadium vision

TMRW Sports selected Populous as architect for the purpose-built stadium that will anchor its upcoming professional flag football league, and brought in Transwestern’s Sports & Entertainment Group to lead the process of identifying a host city. The move pushes NFL Flag further from a pop-up event model and toward a permanent physical footprint, after TMRW Sports unveiled modular stadium renderings and a flythrough animation on July 9.

The plan centers on a modular venue built for the needs of a new league, not a borrowed field or a one-off showcase. That matters because the stadium work now has to solve for more than seating and sightlines: the design and real-estate path have to account for broadcast production, training space, player development and event staging, all while staying flexible enough for a sport that is still defining its pro infrastructure. Transwestern’s job is not just finding dirt; it is shaping the site-search and development path that can turn a concept into something operational.

The timing lines up with a larger run of momentum around the sport. On March 30, the NFL said it was partnering with TMRW Sports to develop and operate a professional flag football league for women and men, backed by NFL clubs, institutional and strategic investors, and current and former NFL players. On April 14, the league named Brian Flinn senior vice president, global flag football, a new role created to drive the game’s international growth. The NFL has also said flag football is played by more than 20 million people in more than 100 countries.

Olympic stakes have only sharpened the pitch. The International Olympic Committee’s Executive Board approved the Olympic Qualification System for flag football for LA28 on Feb. 1, locking in men’s and women’s events for the 2028 Summer Games in Los Angeles. NFL clubs had already voted on May 20, 2025, to allow NFL players to compete in flag football at those Games, making the Olympic tournament a bigger platform for recognizable names and a stronger proving ground for the sport.

The league has also been woven into the NFL’s own presentation calendar. On Jan. 22, the NFL said flag football would take center stage during Super Bowl LX week in the San Francisco Bay Area, another sign the league sees the game as more than a youth participation lane. With Populous on the design side and Transwestern handling the site search, TMRW Sports is now treating NFL Flag like a sport that needs a home base, not just a schedule.