Teodora Kostović
Serbian tennis player (born 2007)
From Wikipedia, the free encyclopedia
Teodora Kostović (Serbian Cyrillic: Теодора Костовић; born 28 June 2007)[1] is a Serbian professional tennis player. On 16 March 2026, she reached her best singles ranking of world No. 159 on the WTA.
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Kostović at the 2026 Dubrovnik Open | |
| Country (sports) |  Serbia |
|---|---|
| Residence | Novi Sad, Serbia[1] |
| Born | 28 June 2007 Novi Sad, Serbia |
| Height | 1.76 m (5 ft 9 in) |
| Plays | Right-handed (double-handed backhand) |
| Coach | Boris Čonkić |
| Prize money | US$81,396 |
| Singles | |
| Career record | 41–15 |
| Career titles | 1 ITF |
| Highest ranking | No. 159 (16 March 2026) |
| Current ranking | No. 184 (22 June 2026) |
| Grand Slam singles results | |
| Australian Open | Q2 (2026) |
| French Open | Q2 (2026) |
| Wimbledon | 1R (2026) |
| US Open | Q1 (2026) |
| Doubles | |
| Career record | 3–3 |
| Career titles | 0 |
| Highest ranking | 1260 (26 May 2025) |
| Current ranking | 1366 (18 August 2025) |
| Team competitions | |
| Fed Cup | 1–2 (singles 1–1) |
| Last updated on: 16 March 2026. | |
Early life and background
Career
Junior events
Competing on the ITF Junior Circuit, Kostović achieved a career-high ranking of world No. 6.[2]
She won J300 singles titles on clay courts in Plovdiv and Vrsar in 2023.[3]
In 2024, she claimed five J300 titles across all three major surfaces. Her victories included wins on grass in Roehampton, on hard courts in College Park, and on clay in Bradenton, Oberpullendorf, and Bytom.[4][3] That same year, she was also a finalist at the J500 event on clay in Offenbach, and the J300 event on hard courts in Indian Wells.[2]
In September 2024, she won the U18 European Junior Championships, defeating Alena Kovačková in the final.[5]
Grand Slam performance
Singles:
- Australian Open: 2R (2024, 2025)
- French Open: 3R (2023, 2024)
- Wimbledon: QF (2024, 2025)
- US Open: QF (2024)
Doubles:
2024: Senior debut
Aged 16, Kostović made her professional debut on the ITF Women's World Tennis Tour in Kuršumlijska Banja, Serbia. In May 2024, she reached the singles semifinals of a W15 event there, losing in three sets to compatriot Anja Stanković.[6] Later in 2024, she played four additional tournaments in the same town at the W15 and W75 levels, not advancing past the quarterfinals in any of them.[7]
2025: WTA 1000 debut
Kostović made her WTA Tour singles debut in February 2025 at the WTA 500 Abu Dhabi Open, entering the qualifying draw via a wildcard earned through a junior tournament result. In the first qualifying round, she won the first set 6–2 against Diane Parry before the French player retired from the match. In the final qualifying round, Kostović initially led 4–1 against McCartney Kessler but ultimately lost 4–6, 2–6.[8]
The following month, in March 2025, she received a wildcard into the qualifying rounds of the WTA 1000 Miami Open. Ranked No. 756 at the time, Kostović defeated world No. 99 and 17th qualifying seed Olivia Gadecki in the first round. She lost to Greet Minnen in the final qualifying round.[9]
In April 2025, Kostović received a wildcard for the qualifying rounds and subsequently qualified for the main draw of the WTA 1000 in Madrid. She achieved this by defeating top-100 player Elena-Gabriela Ruse in the first qualifying round and then Lucrezia Stefanini in the final qualifying round.[10] Entering the main draw of Madrid, Kostović, ranked No. 625, was the lowest-ranked participant aside from those using a protected ranking. She was also the youngest player in the main draw. In the first round, she lost to Eva Lys in straight sets.[11]
Billie Jean King Cup
Kostović received her first nomination to represent Serbia in the Billie Jean King Cup in April 2025, under the captaincy of Dušan Vemić, for the Europe/Africa Zone Group I event against Slovenia and Lithuania, and later in the promotional play-off tie against Croatia.[12] She made her debut for the national team on 10 April 2025, recording a victory over Klaudija Bubelytė of Lithuania.[13]
Performance timelines
| W | F | SF | QF | #R | RR | Q# | P# | DNQ | A | Z# | PO | G | S | B | NMS | NTI | P | NH |
Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup, United Cup, Hopman Cup and Olympic Games are included in win–loss records.
Singles
Current through the 2025 Miami Open.
| Tournament | 2025 | 2026 | SR | W–L | Win% |
|---|---|---|---|---|---|
| Grand Slam tournaments | |||||
| Australian Open | A | Q2 | 0 / 0 | 0–0 | – |
| French Open | A | Q2 | 0 / 0 | 0–0 | – |
| Wimbledon | A | 1R | 0 / 1 | 0–1 | 0% |
| US Open | A | 0 / 0 | 0–0 | – | |
| Win–loss | 0–0 | 0–1 | 0 / 1 | 0–1 | 0% |
| WTA 1000 tournaments | |||||
| Miami Open | Q2 | 0 / 0 | 0–0 | – | |
| Madrid Open | 1R | 0 / 1 | 0–1 | 0% | |
| Win–loss | 0–1 | 0 / 1 | 0–1 | 0% | |
ITF Circuit finals
Singles: 3 (2 titles, 1 runner-up)
|
|
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Loss | 0–1 | May 2025 | ITF Kuršumlijska Banja, Serbia | W75 | Clay |  Alina Charaeva |
4–6, 6–7(5) |
| Win | 1–1 | Aug 2025 | Serbian Tennis Tour, Serbia | W75 | Clay |  Lina Gjorcheska |
7–5, 6–3 |
| Win | 2–1 | Jul 2026 | Ladies Open Amstetten, Austria | W100 | Clay |  Vivian Wolff |
6–4, 6–0 |