The 1924 International Lawn Tennis Challenge was the 19th edition of what is now known as the Davis Cup. The tournament was, for the second straight year, divided into the America and Europe Zones. 17 teams competed in the Europe Zone, and 6 in America. China, Cuba, Hungary, Mexico, and New Zealand all competed for the first time, and South Africa and Austria returned to create the largest field to date.
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 1932 International Lawn Tennis Challenge was the 27th edition of what is now known as the Davis Cup. 22 teams would enter the Europe Zone; while 8 would enter the Americas Zone, 5 in North America and 3 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 1936 International Lawn Tennis Challenge was the 31st edition of what is now known as the Davis Cup. Due to the low number of competing South American teams, the North & Central America and South America Zones were scrapped and the Americas played in one unified zone. From this edition, the Qualifying Round system of the Europe Zone was scrapped. 19 teams entered the Europe Zone, while 4 teams entered the Americas Zone.
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 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 1959 Davis Cup was the 48th edition of the Davis Cup, the most important tournament between national teams in men's tennis. 27 teams entered the Europe Zone, 8 teams entered the Eastern Zone, and 7 teams entered the America Zone. The Europe Zone was modified so that only the previous year's semifinalists were guaranteed first round byes, allowing more countries to compete. Colombia made its first appearance in the tournament.
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 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 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 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.
The America Zone was one of the two regional zones of the 1932 International Lawn Tennis Challenge.
The America Zone was one of the two regional zones of the 1935 International Lawn Tennis Challenge.
The America Zone was one of the two regional zones of the 1939 International Lawn Tennis Challenge.
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