The Davis Cup is the world's top national team competition in men's tennis, the female equivalent of which is the Billie Jean King Cup. Organized by the International Tennis Federation, it is held annually; in the past, from 2009 to 2015, he awarded points valid for the ATP ranking.

The tournament was conceived in 1899 by four members of the Harvard University tennis team who thought of challenging the British in a tennis competition. Once the idea had received the green light from the respective associations, one of the four Harvard players, Dwight F. Davis, designed the formula for the tournament and purchased an appropriate silver trophy out of his pocket. The first meeting between the United States and the United Kingdom took place in Brookline (Massachusetts) in 1900.

Until 1973 the Davis Cup had only been won by the USA, the United Kingdom, France and Australia/Australasia. Their dominance was broken in 1974 when South Africa and India qualified for the final.

Since the 2019 edition, the format of the competition has changed. The most important change concerns the world group, played over a week, with eighteen teams divided into six groups of three teams each. The matches between these teams include two singles matches and one doubles match. The winners of their group, plus the two best runners-up, advance to the quarter-finals.