Nikola Bartůňková

2021–24: Tour debut, six months anti-doping ban

In April 2021, at the 2021 İstanbul Cup, Bartůňková defeated world No. 152, Leonie Küng,^[2] in the first round of qualifying, but lost in the second to Anastasia Gasanova.^{[citation needed]}

She made her WTA Tour debut at the same tournament one year later, after being handed a wildcard entry for the main-draw, losing to Anastasia Potapova.^[3]

On 16 October 2023, Bartůňková won her first tour-level match when she defeated Dayana Yastremska in the first round of the 2023 Transylvania Open,^[4][5] before losing in three hours to Ana Bogdan in the second round.^[6][7]

In November 2024, Bartůňková was issued with a six-month competition ban backdated to April 2024 for an anti-doping rule violation after testing positive for unintentional use of trimetazidine (TMZ) at two events in early 2024.^[8] She had been provisionally suspended from May 2024 until the conclusion of the investigation.^[9][10] The International Tennis Integrity Agency (ITIA) accepted that the source of the TMZ was a contaminated supplement for which she bore "no significant fault or negligence" for having ingested.^[11]

2025: WTA 500 semifinal & 125 final

In January, Bartůňková played first matches after end of her hiatus in Oslo, reaching semifinal at W15 event where she lost to Anouck Vrancken Peeters.^[12] At her second event at W35 in Sunderland, Bartůňková claimed her fourth career title. Bartůňková reached another final just week after at W35 event in Glasgow.^[13] In July, Bartůňková qualified for the Ladies Open Hechingen and beat two former top-100 players, María Lourdes Carlé and Julia Grabher, en route to her first W75 title. In September, Bartůňková was awarded a wildcard into Guadalajara 125 Open, where she lost to eventual finalist Panna Udvardy in the second round.^[14] The following week, she received another wildcard entry in Guadalajara, this time at the WTA 500 event Guadalajara Open, and scored her second and third WTA Tour main-draw wins over Nicole Fossa Huergo and fellow Czech player Darja Viďmanová in straight sets to reach her maiden WTA Tour quarterfinal,^[15] where she overcame defending champion Magdalena Fręch.^[16] Her run was ended in the semifinals by eventual champion Iva Jovic, in three sets.^[17][18] As a result, she moved up more than 80 places in the rankings to enter the top 200 for the first time at world No. 144 on 15 September 2025.^[19][20]

In October, Bartůňková reached her first WTA 125 final at Samsun Open but lost to second seed Kaja Juvan.^[21] Bartůňková received a wildcard to the WTA 500 Pan Pacific Open in Tokyo but lost to local wildcard Wakana Sonobe.^[22] The following week she lost in the opening round in Chennai, after losing to eventual finalist Kimberly Birrell in three sets.^[23]

In November, Bartůňková received her first nomination for the national team in the 2025 Billie Jean King Cup and helped her team to win Group D. The Czech teenager defeated Yuliana Lizarazo from Colombia, but lost to Petra Marčinko from Croatia.^[24]

2026: Major, WTA 1000 debuts & first top 10 win, top 100

In January, Bartůňková entered her first Grand Slam qualifying at the 2026 Australian Open as the 16th seed. She then scored three wins to make her main draw debut, where she defeated former top-10 player Daria Kasatkina for her first major match win.^[25] Bartůňková reached the third round with an upset over Belinda Bencic, marking her first top-10 win.^[26][27] Her run was ended in the third round by 21st seed Elise Mertens.^[28][29] Following making the final round of qualifying of the 2026 Miami Open, Bartůňková entered the top 100 in the singles rankings at No. 95 on 30 March 2026, becoming the fourth 2006-born player to achieve the feat (after Victoria Mboko, Maya Joint and Sara Bejlek).^[30]

Bartůňková made her WTA 1000 debut at the 2026 Italian Open as a lucky loser, entering the main draw directly in the second round, replacing tenth seed Victoria Mboko.^[31] She recorded her first win at the 1000-level over wildcard Tyra Grant.^[32] She reached the last 16 of a WTA 1000 for the first time, by upsetting 17th seed Madison Keys.^[33]

Singles

Current at the 2026 Mutua Madrid Open.

Doubles

Current after the 2025 Guadalajara Open.

Singles: 1 (runner-up)

More information Result, W–L ...

Result	W–L	Date	Tournament	Surface	Opponent	Score
Loss	0–1	Oct 2025	Samsun Open, Turkey	Hard	Kaja Juvan	6–7(8–10), 3–6

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Singles: 11 (6 titles, 5 runner-ups)

More information Result, W–L ...

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Nov 2021	ITF Milovice, Czech Republic	W25	Hard (i)	Linda Nosková	3–6, 4–6
Loss	0–2	May 2022	Edge Istanbul, Turkey	W60	Clay	Diana Shnaider	5–7, 5–7
Win	1–2	Apr 2023	ITF Santa Margherita de Pula, Italy	W25	Clay	Ylena In-Albon	6–0, 7–5
Win	2–2	Aug 2023	ITF Erwitte, Germany	W25	Clay	Daniela Vismane	6–4, 6–1
Win	3–2	Oct 2023	ITF Santa Margherita di Pula, Italy	W25	Clay	Katharina Hobgarski	6–0, 1–0 ret.
Loss	3–3	Jan 2024	ITF Sunderland, United Kingdom	W35	Hard (i)	Valentina Ryser	3–6, 6–7(6)
Win	4–3	Jan 2025	ITF Sunderland, United Kingdom	W35	Hard (i)	Amelia Rajecki	6–4, 3–6, 6–3
Loss	4–4	Jan 2025	GB Pro-Series Glasgow, United Kingdom	W35	Hard (i)	Valentina Ryser	5–7, 6–7(6)
Win	5–4	Jun 2025	ITF Stuttgart-Vaihingen, Germany	W35	Clay	Emily Seibold	6–4, 7–6(2)
Loss	5–5	Jul 2025	ITF Aschaffenburg, Germany	W50	Clay	Nuria Brancaccio	6–4, 4–6, 4–6
Win	6–5	Jul 2025	Ladies Open Hechingen, Germany	W75	Clay	Julia Grabher	7–5, 6–2

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Junior Grand Slam tournament finals

Singles: 1 (runner-up)

More information Result, Year ...

Result	Year	Tournament	Surface	Opponent	Score
Loss	2023	Wimbledon	Grass	Clervie Ngounoue	2–6, 2–6

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Doubles: 1 (runner-up)

More information Result, Year ...

Result	Year	Tournament	Surface	Partner	Opponents	Score
Loss	2022	French Open	Clay	Céline Naef	Sára Bejlek Lucie Havlíčková	3–6, 3–6

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ITF Junior finals

Singles: 10 (6 titles, 4 runner-ups)

More information Legend ...

Legend
J500 (0–1)
J300 (1–1)
J200 (3–0)
J100 (0–2)
J60 (2–0)

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More information Result, W–L ...

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Jul 2019	ITF Prague, Czech Republic	Grade 4[a]	Clay	Radka Zelníčková	6–3, 6–3
Win	2–0	Oct 2019	ITF Budapest, Hungary	Grade 4	Clay	Luca Janosi	6–3, 6–4
Loss	2–1	Jan 2020	ITF Bromma, Sweden	Grade 3[b]	Hard	Weronika Baszak	4–6, 3–6
Loss	2–2	Feb 2020	ITF Kärnten, Austria	Grade 3	Carpet	Laura Isabel Pütz	2–6, 6–4, 3–6
Loss	2–3	May 2021	ITF Říčany, Czech Republic	Grade 1[c]	Clay	Julia Middendorf	3–6, 6–4, 6–7(4–7)
Loss	2–4	Jul 2021	ITF Milan, Italy	Grade A[d]	Clay	Alexandra Eala	3–6, 3–6
Win	3–4	Sep 2021	ITF Rakovník, Czech Republic	Grade 2[e]	Clay	Tereza Valentová	2–6, 6–1, 6–0
Finalist	NP	Mar 2022	ITF Benicarló, Spain	Grade 2	Clay	Yoana Konstantinova	cancelled
Win	4–4	Mar 2022	ITF Villena, Spain	Grade 1	Clay	Hanne Vandewinkel	7–5, 6–1
Win	5–4	Jan 2023	ITF Bratislava, Slovakia	J200	Hard	Kristýna Tomajková	6–1, 6–1
Win	6–4	Feb 2023	ITF Oberhaching, Germany	J200	Hard	Vlada Mincheva	6–0, 6–3

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Doubles: 6 (5 titles, 1 runner-up)

More information Legend ...

Legend
J300 (1–1)
J200 (4–0)

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More information Result, W–L ...

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Sep 2020	ITF Rakovník, Czech Republic	Grade 2	Clay	Nelly Kněžková	Rozalia Gruszczynska Pola Wygonowska	6–1, 6–2
Win	2–0	May 2021	ITF Říčany, Czech Republic	Grade 1	Clay	Sára Bejlek	Alexis Blokhina Flavie Brugnone	6–3, 6–4
Win	3–0	May 2021	ITF Hannover, Germany	Grade 2	Clay	Céline Naef	Tea Lukic Laura Isabel Pütz	6–3, 6–3
Win	4–0	Sep 2021	ITF Rakovník, Czech Republic	Grade 2	Clay	Elena Pridankina	Virginia Ferrara Giorgia Pedone	6–3, 6–3
Win	5–0	Mar 2022	ITF Benicarló, Spain	Grade 2	Clay	Daria Yesypchuk	Joëlle Steur Marie Vogt	7–5, 6–4
Loss	5–1	Aug 2022	ITF Prague, Czech Republic	Grade 1	Clay	Karolina Kozakova	Amélie Šmejkalová Tereza Valentová	4–6, 1–6

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