The Billie Jean King Cup is the premier international team competition in women's tennis, launched as the Federation Cup in 1963 to celebrate the 50th anniversary of the International Tennis Federation (ITF). The name was changed to the Fed Cup in 1995, and changed again in September 2020 in honor of former World No. 1 Billie Jean King. The Billie Jean King Cup is the world's largest annual women's international team sports competition in terms of the number of nations that compete. The current chair is Katrina Adams.
The Russia women's national tennis team represented Russia in Billie Jean King Cup tennis competition and are governed by the Russian Tennis Federation. They compete in the World Group. Following the 2020 ban of Russia by the World Anti-Doping Agency (WADA) and the Court of Arbitration for Sport (CAS), it competed and won the 2020–21 Billie Jean King Cup under the RTF flag and name. After the Russian invasion of Ukraine, the International Tennis Federation suspended Russia from Billie Jean King Cup competitions.
The Estonia Billie Jean King Cup team represents Estonia in the Billie Jean King Cup tennis competition and are governed by the Estonian Tennis Association.
Lyudmyla Viktorivna Kichenok is a Ukrainian professional tennis player. She has been ranked as high as world No. 3 in doubles. She is a two-time Grand Slam champion winning the 2024 US Open with Jeļena Ostapenko and the 2023 Wimbledon Championships with Mate Pavić becoming the first Ukrainian to do so.
Zarina Diyas is a Kazakh professional tennis player. She has been ranked as high as No. 31 by the WTA. Diyas has won one singles title on the WTA Tour, at the 2017 Japan Women's Open, along with nine singles titles on the ITF Women's Circuit.
Nadiia Viktorivna Kichenok is a Ukrainian professional tennis player. On 31 January 2022, she reached a career-high of No. 29 in the WTA doubles rankings. Kichenok has won nine doubles titles on the WTA Tour, including four with her twin sister Lyudmyla. She has also won four singles titles and 24 doubles titles on the ITF Women's Circuit. On 6 January 2014, she also reached a career-high singles ranking of No. 100.
Veronika Eduardovna Kudermetova is a Russian professional tennis player. She has a career-high singles ranking of world No. 9, achieved on 24 October 2022, and a best WTA doubles ranking of No. 2, reached on 6 June 2022. She also has won three WTA 1000 titles, and won the 2022 WTA Finals with Elise Mertens. In addition, she reached the doubles final of Wimbledon in 2021, with Elena Vesnina.
Nadia Natacha Podoroska is an Argentine professional tennis player. On 12 July 2021, she reached her best singles ranking of world No. 36, and on 18 October 2021, she peaked at No. 62 in the WTA doubles rankings.
Nao Hibino is a Japanese professional tennis player. She has been ranked as high as No. 56 in singles and No. 43 in doubles by the WTA. Hibino has won three singles titles and three doubles titles on the WTA Tour. She has also won nine singles and eleven doubles tournaments on the ITF Women's World Tennis Tour.
Fernanda Contreras Gómez is a Mexican tennis player. She has a career-high singles ranking of world No. 139 by the WTA, achieved on 3 October 2022, and a doubles ranking of 99, achieved on 8 May 2023. She played collegiately for Vanderbilt University.
Liudmila Dmitrievna Samsonova is a Russian professional tennis player. She has career-high WTA rankings of No. 12 in singles and No. 40 in doubles.
The 2020–21 Billie Jean King Cup was the 58th edition of the international women's tennis team's tournament and the first to be styled as the Billie Jean King Cup.
The 2020 Billie Jean King Cup qualifying round was played on 7–8 February 2020. The eight winners of this round qualified for the 2020 Billie Jean King Cup Finals in Budapest.
The finals, formerly known as World Group, is the highest level of Billie Jean King Cup competition in 2020–21. It was originally scheduled to be played on indoor clay courts at the László Papp Budapest Sports Arena in Budapest, Hungary, from 14 until 19 April 2020, but was postponed due to COVID-19. The new venue was established to be the O2 Arena, in Prague, on indoor hard court. The ties were contested in a best-of-three rubbers format and are played on one day. There were two singles matches, followed by a single doubles tie.
The 2020–21 Billie Jean King Cup play-offs was originally scheduled to be held from 17 to 18 April 2020 but was postponed to the following year due to COVID-19. The eight winners of this round will qualify for the 2022 Billie Jean King Cup qualifying round while the eight losers will contest their respective regional Group I event in 2022.
Switzerland defeated Australia 2–0 in the tennis final of the 2022 Billie Jean King Cup. It was the 59th edition of the women's international team competition.
The Billie Jean King Cup finals is the highest level of the Billie Jean King Cup competition in 2022. The competition took place in Glasgow from 8 to 13 November 2022. The ties were contested in a best-of-three rubbers format and played on one day. There were two singles followed by a doubles. The finals featured 12 teams.
Canada defeated Italy in the tennis final, 2–0, in winning the 2023 Billie Jean King Cup. This was Canada's first final and title at the Billie Jean King Cup.
The 2023 Billie Jean King Cup qualifying round is held from 14 to 16 April 2023. The nine winners of this round will qualify for the 2023 Finals while the nine losers will play at the 2023 Play-offs.
The 2024 Billie Jean King Cup qualifying round will be held from 12 to 13 April 2024. The eight winners of this round will qualify for the 2024 Finals.
