World Hard Court Championships

World Hard Court Championships (French: Championnats du Monde de Tennis sur Terre Battue) were an annual major tennis tournament sanctioned by the International Lawn Tennis Federation, held from 1912 to 1923. It was principally held in Paris, on clay courts of the Stade Français in the Paris suburb of Saint-Cloud, with one exception when the tournament was held at the Royal Leopold Club in Brussels, Belgium, in 1922.

Source: Wikipedia — World Hard Court Championships (CC BY-SA 4.0)