Basque trinquete

A trinquete (also trinquet) is a special court for various indoor versions of pelota and it is a modalite of the pelota sport. in the south america, especially in Argentina the trinquete is also known as close court, because the other open court is named for the fronton. It has some of the characterist features of a real tennis court, probably because many real tennis courts were converted to trinquetes in the 19th century. For some sports, the players face the same wall and share the court, similar to squash. For other sports, a net is strung across the middle of the court and the players face each other, similar to tennis.

The trinquet has some basic aspects with the fronton.

...
Wikipedia