I’m not aware of another city that has our quotidian relationship with handball courts. Anyone familiar with New York City’s park system recognizes these walls with unattended indifference. Should the walls, on the other hand, appear unused and mysteriously erect and their purpose unclear, it takes only a quick query to a local to learn that they’re for handball. Like eating pizza while walking or scaffold pull-ups, handball is a not infrequently-occurring phenomenon here in New York.