Davis Cup is an international tennis tournament at which men teams compete as a country-vs-country.
History of the tournament
The national team with the most titles in the history of the tournament is USA. The current tennis champion and titleholder is Russia.
There are 24 teams that are separated into 6 groups.
The World Group is the highest-ranked group where 16 best national teams compete for the Davis Cup trophy. Other nations that are not the part of the World Group compete in 3 regional zones. The national teams in each group play against each other and the winners of each group meet in the knockout stage.