Sandra Zaniewska is a Polish tennis coach and former professional player. She competed on the professional tour from 2006 to 2017. During her playing career, Zaniewska won ten singles and seven doubles titles on the ITF Circuit.
After retiring as a player, Zaniewska transitioned into coaching and has worked with WTA players like Petra Martić, and Alizé Cornet, and currently coaches Marta Kostyuk.
You can follow Sandra Zaniewska’s biography, personal details, career overview, net worth, prize money, stats, achievements, and more here.
Sandra Zaniewska’s Biography
| Detail | Information |
| Full Name | Sandra Zaniewska |
| Date of Birth | January 3, 1992 |
| Birthplace | Katowice, Poland |
| Nationality | Polish |
| Height | Not available |
| Turned Pro | 2006 |
| Retired | 2017 |
| Plays | Right-handed |
| Career-high Singles Ranking | 142 (August 27, 2012) |
| Career-high Doubles Ranking | 203 (August 27, 2012) |
| Current Occupation | Tennis Coach |
Sandra Zaniewska was born on January 3, 1992, in Katowice, Poland to parents Maciej Zaniewski and Teresa Zaniewska.
She has one older brother named Bartek. Zaniewska began playing tennis at the age of 10, initially as a way to expend her extra energy.
Playing Career
Sandra Zaniewska’s professional tennis career spanned from 2006 to 2017, during which she primarily competed on the ITF Circuit.
Throughout her playing years, Zaniewska achieved notable success, amassing 10 singles and 7 doubles titles on the ITF tour. Her career peaked on August 27, 2012, when she attained her highest WTA singles ranking of World No. 142.
That same year proved to be a breakthrough for Zaniewska, as she won 3 consecutive ITF titles and made her WTA main draw debut at Wimbledon after successfully navigating through the qualifying rounds.
Later in 2012, she earned her first WTA main draw victory, defeating Elina Svitolina, then ranked No. 164, at the Baku Cup. While Zaniewska’s career was primarily focused on the ITF Circuit, she occasionally competed in WTA events and Grand Slam qualifiers.
Her experience as a player, including reaching the finals of the 2009 Australian Open girls’ doubles event with partner Aleksandra Krunić, laid the foundation for her successful transition into coaching after her retirement in 2017.
Coaching Career
After retiring from professional tennis in 2017, Zaniewska quickly transitioned into coaching, starting her journey with Petra Martić less than a year after hanging up her racquet.
Under Zaniewska’s guidance, Martić experienced a remarkable rise in rankings, jumping from No. 90 at the start of 2018 to No. 15 by the end of 2019, achieving her first career Top 20 ranking.
During their partnership, Martić had a breakout year in 2019, winning her first WTA title in Istanbul and reaching the quarterfinals at Roland Garros. Zaniewska’s coaching prowess helped Martić reach the Round of 16 at several Grand Slam tournaments.
In July 2023, Zaniewska began coaching Ukrainian player Marta Kostyuk, helping her reach a career-high ranking of World No. 26 and guiding her to the quarterfinals of the 2024 Australian Open.
Sandra Zaniewska’s Net Worth Details
Sandra Zaniewska’s net worth is estimated to be $3 million as of 2025.
Sandra Zaniewska’s primary earnings sources appear to be her career prize money from her time as a professional tennis player and her subsequent income as a tennis coach.
Prize Money
As a player competing primarily on the ITF Circuit, Sandra Zaniewska’s career earnings were likely modest compared to top WTA players.
According to the WTA’s Career Prize Money Leaders list, Zaniewska’s total career prize money amounted to $139,683.
Career Stats
| Category | Statistic |
| Career Singles Titles (ITF) | 10 |
| Career Doubles Titles (ITF) | 7 |
| Highest Singles Ranking | 142 |
| Highest Doubles Ranking | 203 |
| Years Active (Professional) | 2006-2017 |
Achievements
- Finalist in 2009 Australian Open girls’ doubles (with Aleksandra Krunić)
- Reached career-high singles ranking of World No. 142 in August 2012
- Won 10 ITF singles titles and 7 ITF doubles titles
- Qualified for 2012 Wimbledon main draw
- Earned first WTA main draw win at the 2012 Baku Cup
FAQs
1. Who is Sandra Zaniewska?
Sandra Zaniewska is a Polish tennis coach and former professional player. She was born on January 3, 1992, in Katowice, Poland, and is known for her achievements on the ITF Circuit and her coaching career.
2. What were Sandra Zaniewska’s career highlights as a player?
Zaniewska won 10 singles and 7 doubles titles on the ITF Circuit. She reached a career-high singles ranking of No. 142 in August 2012 and was the runner-up in girls’ doubles at the 2009 Australian Open with Aleksandra Krunić.
3. When did Sandra Zaniewska retire from professional tennis?
She retired from professional tennis in June 2017 and transitioned into coaching shortly thereafter.
4. Who are some notable players Sandra Zaniewska has coached?
Zaniewska has coached several top players, including Petra Martić, Alizé Cornet, and Marta Kostyuk. Her coaching has contributed to significant achievements, such as Martić reaching her first WTA title and a career-high ranking of No. 15.
5. What is Sandra Zaniewska’s coaching philosophy?
Her coaching philosophy emphasizes developing players as well-rounded individuals. She believes that the best coaches create not just great players but great humans.
6. What is Sandra Zaniewska’s favorite playing surface?
Her favorite surface is clay, which aligns with many of her ITF tournament victories during her playing career.
7. What languages does Sandra Zaniewska speak?
She speaks Polish and English fluently.
8. What books has Sandra Zaniewska written?
She has authored Coaching 2.0: How to Develop Great Female Players On and Off the Court and Raising Champions: The Ultimate Guide for Tennis Parents, focusing on holistic player development.
9. What are some of Sandra Zaniewska’s notable achievements as a coach?
As a coach, she helped Petra Martić achieve a Top 20 ranking and win her first WTA title. Additionally, she began coaching Marta Kostyuk in 2023, helping her refine her game with impressive results.
10. What personal details are known about Sandra Zaniewska?
She was born to Maciej and Teresa Zaniewska and has an older brother named Bartek. She started playing tennis at age 10 and is passionate about environmental issues and mentoring young players.
