The 1934 International Lawn Tennis Challenge was the 29th edition of what is now known as the Davis Cup. 10 teams would enter the Europe Zone, while only 5 would enter the Americas Zone, 3 in North America and 2 in South America. Due to the large number of entries in Europe, a "Qualifying Round" system was introduced in order to better manage the number of teams competing. European teams which lost before the 1933 Europe Zone semifinals would play-off against each other for four spots in the 1934 Europe Zone main draw.
The 1937 International Lawn Tennis Challenge was the 32nd edition of what is now known as the Davis Cup. 20 teams entered the Europe Zone, while 4 teams entered the Americas Zone.
The 1939 International Lawn Tennis Challenge was the 34th edition of what is now known as the Davis Cup. 20 teams entered the Europe Zone, while 7 entered the America Zone.
The 1946 Davis Cup was the 35th edition of the most important tournament between national teams in men's tennis. The trophy and tournament were renamed for the founder, Dwight F. Davis, upon his death in 1945. This was the first edition since the end of World War II. 15 teams entered the Europe Zone, and 5 teams entered the America Zone.
The 1947 Davis Cup was the 36th edition of the most important tournament between national teams in men's tennis. 20 teams entered the Europe Zone, and 2 teams entered the America Zone. Luxembourg competed for the first time.
The 1950 Davis Cup was the 39th edition of the most important tournament between national teams in men's tennis. 22 teams entered the Europe Zone, and 4 teams entered the America Zone. Play took place on Asian soil for the first time, when the Philippines hosted Pakistan in Manila for their first-round Europe Zone tie.
The 1954 Davis Cup was the 43rd edition of the Davis Cup, the most important tournament between national teams in men's tennis. 23 teams entered the Europe Zone and 7 teams entered the America Zone. The Eastern Zone was abandoned for this year and India, the sole competing country, was moved to the Europe Zone.
The 1955 Davis Cup was the 44th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 24 teams entered the Europe Zone, 7 teams entered the America Zone, and 3 teams entered the newly reinstated Eastern Zone. Burma competed for the first time.
The 1956 Davis Cup was the 45th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 24 teams entered the Europe Zone, 5 teams entered the America Zone, and 3 teams entered the Eastern Zone.
The 1960 Davis Cup was the 49th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 28 teams entered the Europe Zone, 6 teams entered the America Zone, and 6 teams entered the Eastern Zone. South Korea made its first appearance in the tournament.
The 1961 Davis Cup was the 50th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 28 teams entered the Europe Zone, 7 teams entered the Americas Zone, and 7 teams entered the Eastern Zone. Ecuador, Indonesia and Morocco made their first appearances in the tournament.
The 1962 Davis Cup was the 51st edition of the Davis Cup, the most important tournament between national teams in men's tennis. 28 teams entered the Europe Zone, 8 teams entered the Eastern Zone, and 5 teams entered the America Zone. Iran and the Soviet Union made their first appearances in the tournament.
The 1963 Davis Cup was the 52nd edition of the Davis Cup, the most important tournament between national teams in men's tennis. 32 teams entered the Europe Zone, 9 teams entered the Eastern Zone, and 7 teams entered the America Zone. Rhodesia made its first appearance in the tournament.
The 1964 Davis Cup was the 53rd edition of the Davis Cup, the most important tournament between national teams in men's tennis. 32 teams entered the Europe Zone, 10 teams entered the Eastern Zone, and 7 teams entered the America Zone. Bulgaria and South Vietnam made their first appearances in the tournament.
The 1971 Davis Cup was the 60th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 28 teams entered the Europe Zone, 13 teams entered the Americas Zone, and 9 teams entered the Eastern Zone. Bolivia made its first appearance in the tournament.
The 1972 Davis Cup was the 61st edition of the Davis Cup, the most important tournament between national teams in men's tennis. 55 teams would enter the competition, 33 in the Europe Zone, 11 in the Americas Zone, and 11 in the Eastern Zone. In this year's tournament the Challenge Round was abolished, resulting in the previous year's champion now playing in all matches rather than receiving a bye to the final. Going forward the winner of the Inter-Zonal Zone would now be declared the Davis Cup champion.
The 1973 Davis Cup was the 62nd edition of the Davis Cup, the most important tournament between national teams in men's tennis. 53 teams entered the competition, 31 in the Europe Zone, 12 in the Americas Zone, and 10 in the Eastern Zone.
The 1978 Davis Cup was the 67th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 50 teams entered the competition, 29 in the Europe Zone, 10 in the Americas Zone, and 11 in the Eastern Zone.
The 1979 Davis Cup was the 68th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 52 teams would enter the competition, 29 in the Europe Zone, 13 in the Americas Zone, and 10 in the Eastern Zone.
The 1980 Davis Cup was the 69th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 52 teams would enter the competition, 30 in the Europe Zone, 12 in the Americas Zone, and 10 in the Eastern Zone.
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