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Employees set the last layer of clay on the Suzanne Lenglen court on May 7, 2012 at the Roland Garros tennis stadium in Paris, where the French Open tennis tournament will run from May 22 to June 10, 2012. AFP PHOTO JACQUES DEMARTHON        (Photo credit should read JACQUES DEMARTHON/AFP/GettyImages)
Employees set the last layer of clay on the Suzanne Lenglen court on May 7, 2012 at the Roland Garros tennis stadium in Paris, where the French Open tennis tournament will run from May 22 to June 10, 2012. AFP PHOTO JACQUES DEMARTHON        (Photo credit should read JACQUES DEMARTHON/AFP/GettyImages)

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Roland Garros clay: A layered cake - with red frosting

How is the world's most prestigious clay tennis court made? Bruno Slastan, head groundsman for French Open venue Roland Garros, explains to CNN Open Court.

Roland Garros clay: A layered cake - with red frosting

How is the world's most prestigious clay tennis court made? Bruno Slastan, head groundsman for French Open venue Roland Garros, explains to CNN Open Court.