Ksenia Yuryevna Pervak (; born 27 May 1991) is a former tennis player from Russia.
Pervak won one singles title on the WTA Tour, as well as nine singles and three doubles titles on the ITF 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.
Pervak won the 2009 Australian Open girls' singles title, defeating Laura Robson in straight sets in the final.
In November 2015, she announced her retirement from professional tennis due to chronic injuries. However, she did return to tennis briefly, playing four tournaments between September 2016 Первак возобновила карьеру и сыграет на турнире в Санкт-Петербурге and January 2017. Her last match was a loss in the first qualifying round of the Australian Open.
At the Guangzhou International Open, she defeated the No. 2 seed Chan Yung-jan in the first round, and reached the quarterfinals by defeating Russian compatriot Alexandra Panova, winning 24 of 27 points in the final set.
Pervak played in the first round of the main draw of the Australian Open for the first time in her career, but lost to 13th seed and fellow Russian Nadia Petrova.
Pervak made the semifinals of the $100k event in Midland, losing to eventual champion Lucie Hradecká. She made two consecutive quarterfinals of WTA Tour events in Memphis and Monterrey, losing to Hradecká and Gisela Dulko, respectively.
Pervak lost in qualifying at the Indian Wells Open to Jamie Hampton. However, she qualified for the Miami Open, defeating Zuzana Kučová and Junri Namigata. She lost in the fourth round of Wimbledon to Tamira Paszek, in three sets.
| Australian Open | Q1 | Q3 | 1R | 1R | 2R | A | A | A | Q1 | 1–3 |
| French Open | A | 1R | 1R | 1R | A | 1R | A | A | A | 0–4 |
| Wimbledon | A | Q2 | 4R | 1R | A | Q1 | A | A | A | 3–2 |
| US Open | A | 1R | 1R | 1R | Q3 | 1R | A | A | A | 0–4 |
| Australian Open | A | 1R | 2R | 1–2 |
| French Open | A | 1R | A | 0–1 |
| Wimbledon | A | 1R | A | 0–1 |
| US Open | 1R | A | A | 0–1 |
| {class=wikitable style="font-size:90%" !Legend |
| Premier M & Premier 5 |
| Premier |
| International |
| Hard (1–1) |
| Clay (0–0) |
| Loss | 0–1 | Jul 2011 | Baku Cup, Azerbaijan | International | Hard | Vera Zvonareva | 1–6, 4–6 |
| Win | 1–1 | Sep 2011 | Tashkent Open, Uzbekistan | International | Hard | Eva Birnerová | 6–3, 6–1 |
| {class=wikitable style="font-size:90%" !Legend |
| Premier M & Premier 5 |
| Premier |
| International |
| Hard (0–1) |
| Clay (0–0) |
| Loss | 0–1 | Feb 2010 | Pattaya Open, Thailand | International | Hard | Anna Chakvetadze | Marina Erakovic Tamarine Tanasugarn | 5–7, 1–6 |
| {class=wikitable style="font-size:85%" !Legend |
| $100,000 tournaments |
| $50,000 tournaments |
| $25,000 tournaments |
| Hard (4–2) |
| Clay (5–5) |
| Carpet (0–1) |
| Win | 1–0 | Sep 2007 | ITF Batumi, Georgia | 25,000 | Hard | Corinna Dentoni | 6–4, 6–3 |
| Loss | 1–1 | May 2008 | ITF Moscow, Russia | 25,000 | Clay | Nina Bratchikova | 6–3, 1–6, 5–7 |
| Win | 2–1 | Aug 2008 | ITF Penza, Russia | 50,000 | Clay | Sofia Shapatava | 6–4, 6–1 |
| Win | 3–1 | Aug 2008 | ITF Moscow, Russia | 25,000 | Clay | Elena Kulikova | 3–6, 6–3, 6–1 |
| Loss | 3–2 | Sep 2008 | ITF Ruse, Bulgaria | 25,000 | Clay | Lenka Wienerová | 4–6, 4–6 |
| Loss | 3–3 | Oct 2008 | ITF Podolsk, Russia | 50,000 | Carpet (i) | Alisa Kleybanova | 6–7(5), 0–6 |
| Win | 4–3 | Aug 2009 | ITF Moscow, Russia | 25,000 | Clay | Ekaterina Lopes | 4–6, 6–4, 6–2 |
| Win | 5–3 | Aug 2009 | ITF Moscow, Russia | 25,000 | Clay | Ekaterina Ivanova | 6–0, 6–2 |
| Loss | 5–4 | Aug 2009 | ITF Katowice, Poland | 25,000 | Clay | Camila Giorgi | 2–6, 3–6 |
| Loss | 5–5 | Sep 2009 | Denain Open, France | 50,000 | Clay | Stéphanie Cohen-Aloro | 3–6, 4–6 |
| Win | 6–5 | Sep 2009 | ITF Helsinki, Finland | 25,000 | Hard (i) | Stéphanie Foretz | 6–4, 6–2 |
| Win | 7–5 | Jun 2010 | Bella Cup, Poland | 25,000 | Clay | Magda Linette | 6–4, 6–1 |
| Loss | 7–6 | Jun 2011 | ITF Zlín, Сzech Republic | 50,000 | Clay | Patricia Mayr-Achleitner | 1–6, 0–6 |
| Win | 8–6 | Oct 2013 | ITF Istanbul, Turkey | 25,000 | Hard (i) | Anhelina Kalinina | 6–0, 7–5 |
| Win | 9–6 | Nov 2013 | ITF Istanbul, Turkey | 50,000 | Hard (i) | Eva Birnerová | 6–4, 7–6(4) |
| Loss | 9–7 | Feb 2014 | Dow Midland Classic, United States | 100,000 | Hard (i) | Heather Watson | 4–6, 0–6 |
| Loss | 9–8 | Jul 2015 | President's Cup, Kazakhstan | 25,000 | Hard | Natela Dzalamidze | 6–6 ret. |
| {class=wikitable style="font-size:85%" !Legend |
| $50,000 tournaments |
| $25,000 tournaments |
| Clay (1–1) |
| Carpet (2–0) |
| Win | 1. | 8 September 2008 | ITF Ruse, Bulgaria | 25,000 | Clay | Alexandra Panova | Vitalia Diatchenko Eugeniya Pashkova | 6–2, 6–7(5), 10–5 |
| Win | 2. | 3 November 2008 | Ismaning Open, Germany | 50,000 | Carpet (i) | Oxana Lyubtsova | Julia Görges Laura Siegemund | 6–2, 4–6, 10–7 |
| Win | 3. | 30 March 2010 | ITF Khanty-Mansiysk, Russia | 50,000 | Carpet (i) | Alexandra Panova | Lyudmyla Kichenok Nadiia Kichenok | 7–6(7), 2–6, 10–7 |
| Loss | 1. | 31 May 2010 | Infond Open, Slovenia | 50,000 | Clay | Alexandra Panova | Andreja Klepač Tadeja Majerič | 3–6, 6–7(6) |
| Win | 2009 | Australian Open | Hard | Laura Robson | 6–3, 6–1 |
|
|