Pervak at the 2014 US Open qualifying
|Full name||Ksenia Yuryevna Pervak|
|Country (sports)|| Russia (2005-2011, 2013-present) |
|Born||27 May 1991|
Chelyabinsk, Russian SFSR, Soviet Union
|Height||1.70 m (5 ft 7 in)|
|Plays||Left (two-handed backhand)|
|Career titles||1 WTA, 9 ITF|
|Highest ranking||No. 37 (19 September 2011)|
|Grand Slam Singles results|
|Australian Open||2R (2013)|
|French Open||1R (2010, 2011, 2012, 2014)|
|US Open||1R (2010, 2011, 2012, 2014)|
|Career titles||3 ITF|
|Highest ranking||No. 123 (30 January 2012)|
|Grand Slam Doubles results|
|Australian Open||2R (2013)|
|French Open||1R (2012)|
|US Open||1R (2011)|
Pervak won one singles title on the WTA Tour, as well as nine singles and three doubles titles on the ITF Women's Circuit. On 19 September 2011, she reached her best singles ranking of world No. 37. On 30 January 2012, she peaked at No. 123 in the doubles rankings.
In November 2015, she announced her retirement from professional tennis due to chronic injuries. However, she returned to tennis on 19 September 2016, making her comeback at an ITF St. Petersburg tournament.
Pervak made it to the second round of the PTT Pattaya Women's Open where she lost to second seed Caroline Wozniacki in three sets. She then won three qualifying matches to advance to the main draw in 's-Hertogenbosch where she defeated Czech Petra Cetkovská in the first round. Pervak also won the Australian Open junior tournament in that year, defeating Laura Robson in the final.
In early February, Pervak lost in the first round of the Pattaya City Open to then world No. 14 Vera Zvonareva. Pervak then reached the Malaysian Open main draw but lost to Noppawan Lertcheewakarn in the first round. At the French Open, she reached the main draw where she lost to Maria Sharapova in the first round. At the Banka Koper Slovenia Open, Pervak reached her first WTA Tour semifinal against Johanna Larsson but she had to retire due to a wrist injury.
At the Guangzhou International Women's Open, she defeated the No. 2 seed Chan Yung-jan in the first round. She then reached the quarterfinals by defeating Russian compatriot Alexandra Panova, winning 24 of 27 points in the final set.
Pervak kicked off her 2011 season in Brisbane, Australia, where she was seeded seventh for the qualifying draw of the Brisbane International. She defeated Jessica Moore and Alexandra Panova but was defeated by Anastasia Pivovarova in the third qualifying round. She gained entry into the main draw as a lucky loser and defeated Anna Chakvetadze in the first round, before losing in the second to Petra Kvitová.
Pervak made the semifinals of the $100,000 ITF event in Midland, losing to eventual champion Lucie Hradecká. She made two consecutive quarterfinals of WTA events in Memphis and Monterrey, losing to Hradecká and Gisela Dulko respectively.
Pervak lost in qualifying at the BNP Paribas Open at Indian Wells to Jamie Hampton. However, she qualified for the Sony Ericsson Open in Miami, defeating Zuzana Ku?ová and Junri Namigata. She lost in the fourth round of Wimbledon to Tamira Paszek in three sets.
At the Brisbane International, Pervak scored the first top-10 victory of her career by defeating former world No. 1 Caroline Wozniacki in the first round, winning in a final set tiebreak. She later faced top seed Victoria Azarenka in the quarterfinals and was heavily defeated.
Pervak was unseeded at the Australian Open. She defeated 32nd seed Mona Barthel in the first round, but subsequently lost her match against Heather Watson in three sets, despite holding three match points in the second set tiebreak. She realigned her allegiance with Russia in June 2013.
|Runner-up||1||24 July 2011||Baku Cup, Azerbaijan||Hard||Vera Zvonareva||1-6, 4-6|
|Winner||1||17 September 2011||Tashkent Open, Uzbekistan||Hard||Eva Birnerová||6-3, 6-1|
|Runner-up||1||14 February 2010||Pattaya Women's Open, Thailand||Hard||Anna Chakvetadze|| Marina Erakovic
|Winner||1.||24 September 2007||Batumi, Georgia||Hard||Corinna Dentoni||6-4, 6-3|
|Runner-up||1.||19 May 2008||Moscow, Russia||Clay||Nina Bratchikova||6-3, 1-6, 5-7|
|Winner||2.||11 August 2008||Penza, Russia||Clay||Sofia Shapatava||6-4, 6-1|
|Winner||3.||18 August 2008||Moscow, Russia||Clay||Elena Kulikova||3-6, 6-3, 6-1|
|Runner-up||2.||8 September 2008||Ruse, Bulgaria||Clay||Lenka Wienerová||4-6, 4-6|
|Runner-up||3.||20 October 2008||Podolsk, Russia||Carpet (i)||Alisa Kleybanova||6-7(5-7), 0-6|
|Winner||4.||3 August 2009||Moscow, Russia||Clay||Ekaterina Ivanova||4-6, 6-4, 6-2|
|Winner||5.||10 August 2009||Moscow, Russia||Clay||Ekaterina Ivanova||6-0, 6-2|
|Runner-up||4.||31 August 2009||Katowice, Poland||Clay||Camila Giorgi||2-6, 3-6|
|Runner-up||5.||7 September 2009||Denain, France||Clay||Stéphanie Cohen-Aloro||3-6, 4-6|
|Winner||6.||28 September 2009||Helsinki, Finland||Hard (i)||Stéphanie Foretz||6-4, 6-2|
|Winner||7.||28 June 2010||Toru?, Poland||Clay||Magda Linette||6-4, 6-1|
|Runner-up||6.||6 June 2011||Zlín, ?zech Republic||Clay||Patricia Mayr-Achleitner||1-6, 0-6|
|Winner||8.||28 October 2013||Istanbul, Turkey||Hard (i)||Anhelina Kalinina||6-0, 7-5|
|Winner||9.||4 November 2013||Istanbul, Turkey||Hard (i)||Eva Birnerová||6-4, 7-6(7-4)|
|Runner-up||7.||10 February 2014||Midland, United States||Hard (i)||Heather Watson||4-6, 0-6|
|Runner-up||8.||27 July 2015||Astana, Kazakhstan||Hard||Natela Dzalamidze||6-6 ret.|
|Winner||1.||8 September 2008||Ruse, Bulgaria||Clay||Alexandra Panova|| Vitalia Diatchenko
|6-2, 6-7(5-7), [10-5]|
|Winner||2.||3 November 2008||Ismaning, Germany||Carpet (i)||Oxana Lyubtsova|| Julia Görges
|6-2, 4-6, [10-7]|
|Winner||3.||30 March 2010||Khanty-Mansiysk, Russia||Carpet (i)||Alexandra Panova|| Lyudmyla Kichenok
|7-6(9-7), 2-6, [10-7]|
|Runner-up||1.||31 May 2010||Maribor, Slovenia||Clay||Alexandra Panova|| Andreja Klepa?