The 2006 French Open was a tennis tournament that took place on the outdoor clay courts at the Stade Roland Garros in Paris, France from May 28 to June 11, 2006. It was the 105th staging of the French Open, and the second of the four Grand Slam tennis events of 1991. This edition made history as it became the first Grand Slam tournament to start on a Sunday. It was the 2nd time since 1985 that all top 4 seeds reached the semi-finals in the men's singles of a Grand Slam tournament. This did not happen again until the same tournament 5 years later. Both defending champions, Rafael Nadal and Justine Henin-Hardenne, retained their titles.