Billie Jean King Cup
Billie Jean King 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 France.
Overall 16 teams qualify for the World Group I and World Group II. There is a promotion and relegation system between the groups that determines the participants for the following year. The best 8 teams compete in a knockout system and each round is consisted of 5 matches. The team that first wins 3 matches qualifies to the next round.