The French Open is famous for being the only Grand Slam played on a clay court. On a clay court the ball bounces much slower and higher than on hard or grass courts. This makes it more difficult to win the point and rallies (the number of shots in a point) usually last longer. Players that excel on clay courts are called clay-court specialists.
The tournament is played in the summer for two weeks. It starts near the end of May and finshes during the first few days of June.