In a soccer-mad city, Santa Ana's Centennial Park is the Indianapolis Speedway of the sport, the place where all fútbolistas aspire to play on manicured fields that host seemingly continuous games from sunrise to 10 p.m. (raza plays 72 hours of soccer per week there, according to city officials). But some of the best action isn't even on the park's four official fields—check out the pick-up games that happen on every available square inch, with backpacks and even books substituting for goal posts, a beehive of humanity that makes the FIFA World Cup seem like an English high tea.