The 1931 International Lawn Tennis Challenge was the 26th edition of what is now known as the Davis Cup. Due to an increase in South American entries, the America Zone was split into the North & Central America Zone and the South America Zone. The winner of each sub-zone would play to determine who moved to the Inter-Zonal round. 22 teams would enter the Europe Zone, while 8 would enter the America Zone. These included first-time entries from Brazil, Paraguay and Uruguay, although Brazil withdrew without playing a tie, and Paraguay would not play their second tie until 1982. This year also marked the first time that ties were played in South America.
The 1933 International Lawn Tennis Challenge was the 28th edition of what is now known as the Davis Cup. 24 teams would enter the Europe Zone; while 9 would enter the Americas Zone, 4 in North America and 5 in South America.
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 1935 International Lawn Tennis Challenge was the 30th edition of what is now known as the Davis Cup. Due to increased political tensions in Europe, entries for the Europe Zone declined sharply, causing the Qualifying Round system to be scrapped. Only 11 teams would enter the Europe Zone, with 17 teams entering the qualifying rounds; while six would enter the Americas Zone, 4 in North America and 2 in South America. Estonia entered the tournament for the first time.
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 1938 International Lawn Tennis Challenge was the 33rd edition of what is now known as the Davis Cup. 21 teams entered the Europe Zone, while 4 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 1958 Davis Cup was the 47th 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 5 teams entered the Eastern Zone. Thailand made its first appearance in the competition.
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 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 1965 Davis Cup was the 54th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 31 teams entered the Europe Zone, 9 teams entered the Eastern Zone, and 5 teams entered the America Zone.
The 1966 Davis Cup was the 55th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 32 teams entered the Europe Zone, 8 teams entered the Eastern Zone, and 6 teams entered the America Zone.
The 1967 Davis Cup was the 56th 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.
The 1968 Davis Cup was the 57th 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 Americas Zone, and 8 teams entered the Eastern Zone. Peru made its first appearance in the tournament, having previously entered on 3 separate occasions before subsequently withdrawing before competing in a tie.
The 1969 Davis Cup was the 58th 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 Americas Zone, and 8 teams entered the Eastern Zone.
The 1970 Davis Cup was the 59th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 31 teams entered the Europe Zone, 11 teams entered the Americas Zone, and 11 teams entered the Eastern Zone. Hong Kong made its first appearance in the tournament.
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.
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