Clay court

A clay court is one of the types of tennis court on which the sport of tennis is played. Clay courts are built on a foundation of crushed stone, brick, shale, and other aggregate, with a thin layer of fine clay particles on top. Clay courts are more common in Continental Europe and Latin America than in North America, Asia-Pacific or Britain. The only Grand Slam tournament that uses clay courts is the French Open.

Clay courts come in the more common red clay, which is actually crushed brick, and the slightly harder green clay, also known as "rubico", which is actually crushed metabasalt. Although slightly less expensive to construct than other types of tennis courts, the maintenance costs of clay are high as the surface must be watered and rolled regularly to preserve texture and flatness, and brushed carefully before each game.