Nikola Bartůňková (born 25 February 2006) is a Czech tennis player.[1] Bartůňková has a career-high singles ranking by the Women's Tennis Association (WTA) of 226, achieved on 8 April 2024, and a career-high WTA doubles ranking of 320, achieved on 14 August 2023.
In April 2021, at the 2021 İstanbul Cup, Bartůňková attempted her WTA Tour debut. She defeated world No. 152, Leonie Küng,[2] in the first round of qualifying, before losing to Anastasia Gasanova. She made her WTA Tour debut at the same tournament one year later, after having been handed a wildcard for the main draw.[3] On 16 October 2023, Bartůňková won her first tour-level match when she defeaded former world No. 21, Dayana Yastremska, in the first round of the 2023 Transylvania Open,[4] before losing in three hours to Ana Bogdan in the second round.[5]
On 9 May 2024, Bartůňková was provisionally suspended under the Tennis Anti-Doping Programme (TADP). She provided samples at the W50 event in Trnava, Slovakia (February 2024), and at the W75 event in Maribor, Slovenia, (March 2024). Samples contained trimetazidine and Bartůňková did not possess a valid TUE for the substance. The provisional suspension was effective from 16 April 2024.[6] In response Bartůňková stated that she was shocked, felt innocent and never knowingly consumed any banned substance.[7]
On 14 November 2024, Bartůňková it was announced that had accepted a six-month doping ban for unknowingly ingesting a banned substance after the International Tennis Integrity Agency (ITIA) ruled that the positive tests had been caused by a contaminated supplement. The suspension was backdated meaning she was immediately free to resume playing although her results between her first and second positive tests were declared void, with the exception of a first-round result at an event held in the Czech Republic in March, where she returned a negative sample.[8][9]
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.
Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup and Olympic Games are included in win–loss records.
Czech Republic
Diana Shnaider
Ylena In-Albon
Daniela Vismane
Katharina Hobgarski
Clervie Ngounoue
Radka Zelníčková
Luca Janosi
Weronika Baszak
Alexandra Eala
Yoana Konstantinova
Hanne Vandewinkel
Vlada Mincheva
Flavie Brugnone
Virginia Ferrara 
Daria Yesypchuk
