PARIS, FRANCE.- Roland-Garros, home of the French Open, presents Art Grand Slam, more than 60 canvases created by Slovak photographer and artist Juraj Králik and Martina Navratilova, 50, the Czech-born American legend of world tennis. Navratilova and Králik have been working on this project for four years.

Martina Navratilova said, "What I like is that you hit the ball but you don't exactly know what you're doing."

Kralik suggested the idea to Navratilova in 2000. They created the works on the courts of the the four Grand Slam tennis tournaments in New York, Melbourne, Paris and Wimbledon between 2001 and 2005. They covered the tennis balls with paint and then hit them onto a canvas.