a delicate state between calculation and surprise.
Anna Zaja – Overview
Anna Zaja (born 25 June 1991 in Sigmaringen, Germany) is a former German professional tennis player who competed internationally from the mid-2000s until 2022. The 1.83 m right-hander reached a career-high WTA singles ranking of world No. 184 on 6 May 2019 and a career-high doubles ranking of No. 145 on 28 April 2014. She won six ITF singles titles and thirteen ITF doubles titles, qualified for the 2017 US Open main draw and enjoyed a long parallel career in the German Bundesliga. Although she retired from international tournament tennis in 2022, she continues to play Bundesliga tennis in 2026.
Background and Playing Profile
Zaja grew up in Baden-Württemberg and began playing tennis at the age of seven. She is 1.83 m (6 ft) tall, plays right-handed with a two-handed backhand and identified hard court as her preferred surface. Her career nevertheless developed successfully across hard courts, indoor courts and clay, with several of her strongest later results coming on German clay.
Professional Beginnings
Zaja began her professional career in 2006 and spent many years progressing through the ITF Women's Circuit rather than making a rapid transition to WTA competition. She first entered the WTA rankings in 2008 and improved from outside the Top 900 to approximately No. 500 by 2010. Her career was characterized by persistence: her best singles ranking did not arrive until she was 27.
First ITF Titles
Zaja won her first ITF singles title in Muscat, Oman, in April 2012, defeating Laëtitia Sarrazin 6–2, 6–2 in the final. Further titles followed in Heraklion in 2014, Glasgow and Sharm El Sheikh in 2016, Gonesse in 2017 and Aschaffenburg in 2018.
Her six singles titles therefore spanned more than six years and three surfaces. She was especially productive from 2016 to 2018, winning four of the six championships during that period.
Strong Doubles Career
Doubles initially brought Zaja greater ranking success than singles. She won thirteen ITF doubles titles between 2011 and 2019, including tournaments at $25,000, $50,000 and $60,000 level, and reached a career-high doubles ranking of No. 145 in April 2014.
Her doubles results reflected strong positioning, experience and effectiveness in team situations—qualities that also made her particularly valuable in Bundesliga tennis.
Stuttgart WTA Semifinal – 2014
One of Zaja's most notable results came at the 2014 Porsche Tennis Grand Prix in Stuttgart. Partnering fellow German Antonia Lottner, she reached the doubles semifinals after the pair entered the main draw as alternates.
Zaja and Lottner eventually lost to the world-class partnership of Cara Black and Sania Mirza 6–2, 2–6, [10–4]. Reaching the semifinal of a prestigious WTA Premier tournament remained Zaja's best WTA-level doubles result.
Singles Progress – 2016 and 2017
Zaja's singles career accelerated relatively late. She won ITF titles in Glasgow and Sharm El Sheikh in 2016 and another in Gonesse in March 2017. Her ranking moved from outside the Top 500 in 2015 to approximately No. 300 in 2016 and toward the Top 200 during 2017.
This improvement ultimately gave her an unexpected opportunity at the US Open.
US Open Breakthrough – 2017
Zaja entered the 2017 US Open qualifying tournament ranked approximately No. 236 and had only narrowly gained entry into the qualifying field. She then produced the most important singles run of her career, winning three consecutive qualifying matches to reach her first Grand Slam main draw at age 26.
The achievement was especially notable because Zaja had never previously appeared in a Grand Slam tournament.
US Open Main Draw – 2017
In the first round Zaja faced Russia's Ekaterina Alexandrova. Alexandrova won 6–2, 6–3, ending Zaja's tournament, but qualification for the main draw remained the defining Grand Slam achievement of her career.
The 2017 US Open was Zaja's only Grand Slam singles main-draw appearance.
Exceptional Bundesliga Season – 2017
Zaja was simultaneously outstanding for TEC Waldau Stuttgart in the 2017 Bundesliga. She completed the season undefeated in singles with six victories and played a major role in securing the club's league position.
Several victories were exceptionally close. Against Karolína Muchová she recovered to win 3–6, 6–1, [12–10] after saving three match points. She also saved match points in victories over Vivien Heisen and Ágnes Bukta. The club described her as one of the decisive players of its season.
Peak ITF Season – 2018
July 2018 produced one of the strongest sequences of Zaja's professional career. At a $25,000 tournament in Stuttgart she reached the final before losing to Mandy Minella. The following week she won the $25,000 Aschaffenburg tournament, defeating Katharina Hobgarski 6–4, 7–5 in the final.
She then reached the semifinal of the $60,000 Reinert Open in Versmold, where her run was stopped by former Top-30 player Laura Siegemund. Those three tournaments lifted Zaja from approximately No. 240 to around No. 191.
Aschaffenburg Champion – 2018
The Aschaffenburg title was Zaja's sixth and final ITF singles championship and the biggest singles title of her career. Unlike her earlier $10,000 and $15,000 victories, Aschaffenburg was a $25,000 event containing a substantially stronger field.
The title demonstrated how much her level had improved in her late twenties.
Career Peak – 2019
Zaja reached the highest singles ranking of her career in 2019. After beginning the season just outside the Top 200, she climbed to world No. 184 on 6 May.
This was a remarkably late peak for a player who had first entered professional competition more than a decade earlier.
Grand Slam Qualifying – 2019
Her improved ranking gave Zaja opportunities at three Grand Slam qualifying tournaments in 2019. She reached the second qualifying round at the Australian Open, played the first qualifying round at Roland Garros and reached the second qualifying round at Wimbledon.
She was unable to reproduce her 2017 US Open qualification, but 2019 represented her most sustained period close to Grand Slam level.
Grand Slam Record
Australian Open – Q2 (2019)
Roland Garros – Q1 (2019)
Wimbledon – Q2 (2019)
US Open – First round (2017); Q1 (2018)
Her only Grand Slam main-draw appearance was therefore the 2017 US Open, where she finished with a career main-draw singles record of 0–1.
Later Professional Career
Zaja's singles ranking declined after reaching No. 184 in 2019. She finished that season around No. 373 and remained around the No. 300–400 range through the pandemic period. In 2021 she enjoyed a brief WTA resurgence, qualifying for the Hamburg main draw and defeating Viktoriya Tomova before losing to Elena-Gabriela Ruse in the second round.
She also received a main-draw opportunity at the 2021 Bad Homburg grass-court tournament, where she lost to Ann Li.
Retirement from International Tennis – 2022
Zaja played her final international professional tournament at Santa Margherita di Pula in Italy in April 2022. In July 2022 she announced that she was ending her tournament career.
She therefore retired from the WTA/ITF circuit at age 31 after approximately sixteen years of professional competition.
ITF Singles Titles
Muscat – 2012, $10,000 hard court
Heraklion – 2014, $10,000 hard court
Glasgow – 2016, $10,000 indoor hard court
Sharm El Sheikh – 2016, $10,000 hard court
Gonesse – 2017, $15,000 clay
Aschaffenburg – 2018, $25,000 clay
Zaja finished her professional career with six ITF singles titles and no WTA singles title.
ITF Doubles Titles
Zaja won thirteen ITF doubles titles between 2011 and 2019. Her first came on clay in 2011, while her final title was a W25 indoor hard-court tournament in February 2019.
Among her more significant victories were a $50,000 doubles title in 2012 and a $60,000 title in 2017. She won titles with a variety of partners rather than relying on one long-term doubles partnership.
Bundesliga Career
German club tennis has been an important part of Zaja's career from her teenage years onward. She represented TC Großhesselohe from 2007 to 2009 and later became particularly closely associated with TEC Waldau Stuttgart.
Her combination of singles resilience and doubles experience made her an especially effective Bundesliga player. Her undefeated six-match singles campaign for Waldau in 2017 was one of her finest team seasons.
Return to Bundesliga after Retirement
Zaja's 2022 retirement applied to international professional tournament tennis rather than competitive tennis altogether. She has continued representing TEC Waldau Stuttgart and was again part of its German Bundesliga squad in 2026.
Waldau finished the 2026 Bundesliga season in fourth place after four victories, and Zaja remained one of the club's long-serving German players. Thus, although officially a former professional, she remains an active high-level club player at age 35.
Name after Marriage
TEC Waldau reported in 2026 that Zaja had married and now uses the surname Zahlava. Tennis records and the German league registration continue to identify her professional career under the name Anna Zaja, and she remained listed as Zaja in the 2026 team nomination.
Playing Style
Zaja is a 1.83 m right-hander with a two-handed backhand and listed hard court as her preferred surface. Her height gave her useful serving leverage, but her career was built as much on persistence and competitive resilience as on outright power.
Her Bundesliga record provides particularly strong evidence of her match toughness: in 2017 alone she repeatedly saved match points before winning deciding match tiebreaks. Her later success on clay also showed considerable surface adaptability.
Rankings and Statistics
Career-high singles ranking: No. 184 (6 May 2019)
Career-high doubles ranking: No. 145 (28 April 2014)
ITF singles titles: 6
ITF doubles titles: 13
WTA singles titles: 0
WTA doubles titles: 0
Grand Slam singles main draws: 1
Best Grand Slam result: US Open first round (2017)
Career prize money: US$300,489
Professional singles record: approximately 332–249 across recorded tour and ITF matches
Professional doubles record: 164–116
Ranking Development
2008 – season high No. 926
2009 – No. 719
2010 – No. 515
2011 – No. 494
2012 – No. 319
2013 – No. 312
2014 – No. 317
2015 – No. 487
2016 – No. 299
2017 – No. 200
2018 – No. 191
2019 – career high No. 184
2020 – No. 371
2021 – No. 314
2022 – No. 320 before retirement
Career Highlights
Full name: Anna Zaja
Married name: Anna Zahlava
Born: 25 June 1991, Sigmaringen, Germany
Nationality: German
Height: 1.83 m (6 ft)
Plays: Right-handed, two-handed backhand
Started tennis: Age 7
Preferred surface: Hard court
Professional career: 2006–2022
Career-high singles ranking: No. 184 (6 May 2019)
Career-high doubles ranking: No. 145 (28 April 2014)
ITF singles titles: 6
ITF doubles titles: 13
Best WTA doubles result: Stuttgart semifinal (2014, with Antonia Lottner)
Best Grand Slam singles result: US Open first round (2017)
US Open qualifier: 2017
Biggest ITF singles title: Aschaffenburg $25,000 (2018)
2017 TEC Waldau Bundesliga singles record: 6–0
Career prize money: US$300,489
International retirement: July 2022
Current status: Former professional; active Bundesliga player with TEC Waldau Stuttgart in 2026
Career Trajectory
Zaja's career is notable less for an explosive teenage breakthrough than for unusually persistent development. She spent years in the lower levels of the ITF circuit, moving from outside the Top 900 in 2008 to around No. 300 by 2012. After temporarily falling back outside the Top 500 in 2015, she rebuilt her career and produced her best tennis in her late twenties.
The decisive period came between 2017 and 2019. She qualified unexpectedly for the 2017 US Open, enjoyed an unbeaten Bundesliga singles season, won her biggest ITF singles title in Aschaffenburg in 2018 and finally reached her career-high ranking of No. 184 in May 2019. Her doubles career was also substantial, producing thirteen ITF titles, a ranking of No. 145 and a WTA semifinal in Stuttgart.
After several more seasons around the Top 300–400 and a successful WTA main-draw appearance in Hamburg in 2021, Zaja ended her international tournament career in 2022. She did not abandon competitive tennis, however, and remains involved with TEC Waldau Stuttgart in the Bundesliga in 2026.
Assessment
Anna Zaja built a substantial professional career without ever becoming a regular WTA Tour player. Six ITF singles titles, thirteen doubles titles, career highs of No. 184 and No. 145, more than US$300,000 in prize money and a Grand Slam main-draw appearance represent considerable achievements for a player whose career was based primarily on the ITF circuit.
Her most distinctive quality was persistence. She reached her only Grand Slam main draw at 26, won her biggest ITF singles title at 27 and achieved her highest singles ranking shortly before turning 28. The 2017 US Open qualification and her 2018–2019 rise demonstrate how significantly a player's career can develop well beyond the junior years.
Her continuing Bundesliga involvement adds another dimension. Four years after ending international tournament tennis, Zaja was still part of a top-division German team in 2026. She is therefore best remembered as a durable, competitive German professional whose peak arrived relatively late and whose value in team tennis extended well beyond her WTA career.
all texts by ChatGPT