Kaia Kanepi (; born 10 June 1985) is a former Estonian professional tennis player. She achieved her career-high ranking of world No. 15 on 20 August 2012 and has won four singles titles on the WTA Tour. Kanepi retired from professional tennis by 2025 and subsequently began competing in padel.
Described as a 'resident Grand Slam upset specialist' by The Guardian – with 19 wins over seeded players in the first week of Grand Slams; only two active players (Victoria Azarenka and Venus Williams) have more. She has also reached seven Grand Slam quarterfinals in all four championships (French Open in 2008 and 2012, Wimbledon in 2010 and 2013, the US Open in 2010 and 2017, and Australian Open 2022), becoming the first Estonian to achieve this and was the first Estonian to be ranked inside the world's top 15. Kanepi's numerous achievements have made her one of Estonia's most famous and successful professional tennis players in history. Kanepi reached her first final in 2006, becoming the first Estonian female player to do so, at the Gaz de France Stars where she lost to Kim Clijsters. She then won her first singles title at the Palermo Ladies Open in 2010, also becoming the first Estonian female player to win a title.
Early life and background Kaia Kanepi was born in Haapsalu. Her father, Jaak (a real estate broker) and mother Anne (a homemaker) played tennis. They also have daughters Kadri, who won a tennis scholarship to study in the United States, and Karin, a dedicated horse rider. Kaia, who always watched her parents and sisters play, discovered her love for tennis at an early age. She started playing at the age of eight. Her family has always supported her desire to play professional tennis.
She reached world No. 1 in the International Tennis Federation (ITF) junior rankings before turning professional in 1999.
Professional career 1999–2007: Turning pro, Olympics debut, Maiden WTA final Kanepi represented Estonia in both the women's singles and women's doubles, partnering Maret Ani, at the 2004 Summer Olympics, losing in the first round of both events.
At the end of 2006, she reached her first WTA Tour final during the Gaz de France Stars tournament in Hasselt, Belgium. She came through three qualification rounds and beat Anne Kremer, Nathalie Dechy, Eleni Daniilidou, Francesca Schiavone, and Michaëlla Krajicek to eventually play the final against Kim Clijsters, to whom she lost in three sets.
At the 2007 Australian Open, Kanepi struggled, but defeated 28th-seeded Flavia Pennetta before losing to Alicia Molik in the second round. In Indian Wells, she defeated wildcard Kristina Brandi in the first round, but lost in the second round to 14th seed and eventual champion, Daniela Hantuchová. At the 2007 Sony Ericsson Open in Key Biscayne, Florida, she stunned Patty Schnyder in the second round, before losing to qualifier Vera Dushevina in the next round. In late July 2007, Kanepi reached the semifinals of the Gastein Ladies tournament in Austria, where she fell to Francesca Schiavone. This was her third career semifinal and first of the year. Afterwards, she made her top-40 debut at world No. 40.
2008: French Open quarterfinal After losing in the first round of Australian Open, Kanepi performed better in the next Grand Slam. At the French Open, Kanepi defeated sixth seed Anna Chakvetadze in the second round. She then defeated 29th-seeded Anabel Medina Garrigues for a place in the fourth round. Outplaying unseeded Petra Kvitová she reached the quarterfinals, where she was defeated by fourth seed Svetlana Kuznetsova in straight sets. Nonetheless, Kanepi made history by becoming the first Estonian female tennis player to reach a major quarterfinal.
Kanepi was granted direct entry at Wimbledon, where she lost in the first round to sixth seed Serena Williams.
At the 2008 Summer Olympics, Kanepi reached the third round, defeating Flavia Pennetta and Virginie Razzano, before losing to Li Na.
At the US Open, she defeated Monica Niculescu in the first round, but lost to Amélie Mauresmo in the second round.
In September, Kanepi reached the quarterfinals as a qualifier of the Tier I Pan Pacific Open in Tokyo, where she defeated Vera Dushevina, world No. 13, Chakvetadze, and Virginie Razzano, before losing to world No. 5, Dinara Safina. She then reached the semifinals of the Korea Open in Seoul where she was beaten by the eventual champion and first seed, Maria Kirilenko.
She then made only her second final at the WTA level at the Tier III Japan Open in Tokyo. She defeated Lucie Šafářová, Yanina Wickmayer, Anastasia Pavlyuchenkova, and eighth seed Aleksandra Wozniak, before losing in the final to Danish then world No. 16 and top seed, Caroline Wozniacki, in three sets.
She was named the 2008 Best Female Athlete of Estonia by the Association of Estonian Sports Journalists.Kanepi Named Best Female Athlete in Estonia WTAtour.com, 16 December 2008
2009 Kanepi reached her career-best third round at the Australian Open, but lost miserably to then world No. 3, Dinara Safina, in straight sets. She had an epic match with Kimiko Date, former world No. 4, in the first round.
She was a member of the Estonia Fed Cup team in rounds played in February. She was paired with Maret Ani, and the Estonian team beat Bulgaria, Croatia, and Belarus. Kanepi won all the singles rubbers that she played (including a win over then world No. 15 Victoria Azarenka). She set a new personal serve record in the tournament, among the fastest ever served by a woman.
She continued her season at the Open GdF Suez, a Premier tournament, but lost in the second round to Émilie Loit.
At the top-level Dubai Championships, she advanced to the third round to set up a match with former world number one, Jelena Janković whom she defeated in straight sets. She was the highest-seeded player Kanepi had by that time defeated. Kanepi then beat Elena Vesnina in the quarterfinals, in straight sets. She was, however, denied a place in the finals by Virginie Razzano.
Kanepi then participated at the Rome Masters. She defeated Patty Schnyder in the third round, but lost to Victoria Azarenka in the quarterfinals. Her next tournament was the Madrid Open, where she was seeded 16th. However, she retired in the first round against Lucie Šafářová. In the French Open opening round, Kanepi was defeated by Yaroslava Shvedova in the first surprise of the day. Her first round loss led to a drop in her ranking, as she fell to world No. 24.
She was then scheduled to play at the Birmingham Classic as the second seed. However, she then withdrew because of a knee injury. Kanepi was seeded 25th at the Wimbledon Championships, but lost to Carla Suárez Navarro in the first round.
Kanepi lost her opening matches at Bastad and Portoroz. Her bad form continued when she lost three straight first-round matches during the US Open Series. She fell in the first round of the US Open to qualifier Chang Kai-chen in three sets.
Kanepi lost to Chang again in the first round at Tokyo. She suffered a first-round loss at the China Open in Beijing to Serena Williams in a match where she had more break points than Serena and lost 5–7, 4–6. This was her 12th straight loss. Kanepi ended her losing streak at an ITF tournament Dubai in December, where she defeated Yuliana Fedak in straight sets in the first round. She then lost to Regina Kulikova.
2010: Wimbledon and US Open quarterfinals By the start of the new season, Kanepi seemed to be in better physical shape than in 2009. Kanepi reached the second round at the Auckland Open, defeating world No. 15, Li Na, in straight sets, before losing to Maria Kirilenko in the second round. She fell in the first round of the Hobart International to seventh seed Zheng Jie in a tight three-setter. At the first Grand Slam of the year at the Australian Open, Kanepi defeated Chan Yung-jan in the first round, but fell to 19th seed Nadia Petrova in the second round.
Kanepi was seeded fifth at the Cellular South Cup in Memphis. She was in the same half of the draw as Maria Sharapova. She defeated Arantxa Rus in the first round, and former world No. 7, Nicole Vaidišová, in the second round. She fell in three sets to fifth seed Petra Kvitová in the quarterfinals. Despite this, Kanepi's ranking fell to world No. 96, due to the fact that she did not defend her points from Dubai from the previous year.
Kanepi reached the second round in Acapulco, but lost to top seed and defending champion Venus Williams. Kanepi also fell in the second round of the Monterrey Open to second seed Daniela Hantuchová, in straight sets.
Kanepi then competed in two Premier Mandatory tournaments. At the Indian Wells Open and the Miami Open, she fell in the first rounds to Sorana Cîrstea and Lucie Šafářová respectively. Kanepi's ranking fell out of the top 100 following these tournaments.
She then represented Estonia in the 2010 Fed Cup World Group play-offs against Belgium. She was defeated by world No. 12 Yanina Wickmayer in her first match, but defeated former world No. 1, Justine Henin, in her second match-up.
At the beginning of May, Kanepi won ten straight matches to claim her seventh and eighth career ITF tournaments. She qualified for the French Open, where she defeated Pauline Parmentier in the first round. She pushed world No. 4, Jelena Janković, to three sets before losing in round two. This allowed her ranking to re-enter the top 100.
At the Internazionali di Palermo, Kanepi won her first WTA career singles title. She defeated top seed Flavia Pennetta for the title. At the start of the grass-court season, she reached the quarterfinals as a qualifier at Aegon Classic in Birmingham, defeating 12th seed Elena Baltacha, Jarmila Groth, and Michelle Larcher de Brito en route, before losing to top seed and eventual champion Li Na.
Kanepi then qualified for the Wimbledon Championships, defeating Olga Savchuk, Elena Bovina, and Ajla Tomljanović in straight sets. In the first round, Kanepi caused a big upset when she defeated world No. 6 and French Open finalist, Samantha Stosur. She then defeated Edina Gallovits in the second round, and world No. 31 Alexandra Dulgheru in round three. Kanepi then reached her second Grand Slam quarterfinal, when she defeated Klára Zakopalová in the fourth round. In the quarterfinals, Kanepi lost a tough three-set match to Petra Kvitová, despite having a total of five match points and being a double break up in the final set. With her success at Wimbledon, Kanepi's ranking rose to world No. 38.
Kanepi next played at the Swedish Open. She fell in the first round to fifth seed Arantxa Parra Santonja. However, she continued her strong play at the Palermo Ladies Open where, as the fifth seed, she defeated Rossana de los Ríos, Raluca Olaru, third seed Sara Errani and Romina Oprandi to reach her third WTA Tour final. In the final, Kanepi defeated top seed, world No. 12, and defending champion Flavia Pennetta, not dropping a set in the whole tournament to claim her first WTA career title.
Kanepi was seeded 31st at the US Open where she defeated Alizé Cornet, Akgul Amanmuradova, fourth seed Jelena Janković and 15th seed Yanina Wickmayer to advance to her first US Open quarterfinal, where she lost to the seventh seed and eventual runner-up, Vera Zvonareva.
Kanepi then entered the Pan Pacific Open and defeated Melanie Oudin in the first round. She then upset 13th seed Shahar Pe'er and third seed Jelena Janković in succession. Her run was ended in the quarterfinals by French Open champion Francesca Schiavone, who beat Kanepi in three sets. Her final tournament of the year was the China Open. She defeated 16th seed Anastasia Pavlyuchenkova in the first round but lost to Kvitová in the second.
2011