 During World War II, the tournament was held from 1941 through 1945 on the same grounds, but those events are not recognized by the French governing body, the Fédération Française de Tennis.In 1946 and 1947, the French Championships were held after Wimbledon, making it the third Grand Slam event of the year.In 1968, the French Championships became the first Grand Slam tournament to go open, allowing both amateurs and professionals to compete.