Estádio Municipal Frederico Dalmaso

Sertãozinho built this ground the way many mid-sized São Paulo towns did in the 1960s: as a single municipal project meant to give the city its own home rather than to serve any one club. Construction ran a full decade before the stadium opened, on 10 November 1968, when a Sertãozinho veterans' side beat a team drawn from a São Paulo radio station 2-1, Menis Balbo scoring the ground's first goal.

Locals still call it Fredericão or Campão, names that outlasted the formal one and turn up more often in conversation than "Frederico Dalmaso" itself. The stadium sits inside the city proper, in the Jardim Sumaré district, rather than out on some access road — the kind of placement that made it a fixture of neighbourhood life rather than a destination ground.

Capacity has held at 7,860 since it opened, modest even by the standards of the region's other municipal grounds, and the pitch remains natural grass. Nothing in the record points to a major reconstruction since 1968; what changes here tends to be who plays on it, not the ground itself.