San Fermín pediment

The Madrid Open (Spanish: Masters de Madrid), currently sponsored by Mutua Madrileña and known as the Mutua Madrid Open, is a joint men's and women's professional tennis tournament, held in Madrid, during early May. The clay court event is classified as an ATP World Tour Masters 1000 on the Association of Tennis Professionals tour and a Premier Mandatory event on the Women's Tennis Association tour.

La Caja Mágica (Spanish: The Magic Box) (also known as the Manzanares Park Tennis Center) is a multi-purpose stadium located in Madrid, Spain. Since 2009, it has been the home of the Madrid Open tennis event, and as of 2019, the home of the Davis Cup.There are three courts under the one structure, and a series of retractable roofs.

San Fermín is a ward (barrio) of Madrid belonging to the district of Usera.