Kyle Shanahan, the 49ers coach, recently learned about the challenges of flag football while managing a team in the Fanatics Flag Football Classic. The event features a round-robin tournament with three teams, including current and former NFL players and the U.S. men’s national team. With unique rules such as a smaller field and no tackling, both Shanahan and Tom Brady noted the significant adjustments needed for gameplay. The match is set to begin at 1 p.m. PT, leaving participants eager to adapt to the new format.