| 2021 TK Sparta Prague Open | |
|---|---|
| Date | 9–15 August |
| Category | ATP Challenger Tour |
| Draw | 32S / 16D |
| Surface | Clay |
| Location | Prague, Czech Republic |
| Venue | TK Sparta Prague |
| Champions | |
| Singles | |
 Dalibor Svrčina | |
| Doubles | |
| Jonáš Forejtek / Michael Vrbenský | |
The 2021 TK Sparta Prague Open was a professional tennis tournament played on clay courts. It was part of the 2021 ATP Challenger Tour. It took place in Prague, Czech Republic between 9 and 15 August 2021.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 SRB | Nikola Milojević | 161 | 1 |
 KAZ | Dmitry Popko | 183 | 2 |
 ITA | Lorenzo Giustino | 234 | 3 |
 ARG | Facundo Mena | 254 | 4 |
 CHI | Nicolás Jarry | 263 | 5 |
| ITA | Riccardo Bonadio | 271 | 6 |
 ESP | Adrián Menéndez Maceiras | 287 | 7 |
| CZE | Michael Vrbenský | 288 | 8 |
The following players received wildcards into the singles main draw:
Toby Kodat Martin Krumich Dalibor Svrčina The following player received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
Dalibor Svrčina def. Dmitry Popko 6–0, 7–5. Jonáš Forejtek / Michael Vrbenský def. 
Evgeny Karlovskiy / Evgenii Tiurnev 6–1, 6–4.
Dalibor Svrčina is a Czech tennis player. He has achieved a career-high ATP singles ranking of No. 154 on 2 October 2023 and a doubles ranking of No. 276 on 2 October 2023.
The 2019 Prosperita Open was a professional tennis tournament played on clay courts. It was the 16th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 29 April and 5 May.
The 2019 Advantage Cars Prague Open, also known as Advantage Cars Prague Open by Moneta Money Bank for sponsorship reasons, was a professional tennis tournament played on outdoor clay courts. It was the 26nd (men) and 15th (women) editions of the tournament which was part of the 2019 ATP Challenger Tour and the 2019 ITF Women's World Tennis Tour. It took place in Prague, Czech Republic between 22 and 28 July 2019.
The 2020 I.ČLTK Prague Open is a professional tennis tournament played on outdoor clay courts. It was part of the 2020 ATP Challenger Tour. It took place in Prague, Czech Republic between 17 August and 6 September 2020.
The 2020 Prosperita Open was a professional tennis tournament played on clay courts. It was the 17th edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 31 August and 6 September.
The 2020 Moneta Czech Open was a professional tennis tournament played on clay courts. It was the 27th edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Prostějov, Czech Republic between 7–13 September 2020.
The 2021 I.ČLTK Prague Open was a professional tennis tournament played on outdoor clay courts. It was the 28th (men) and 16th (women) editions of the tournament which was part of the 2021 ATP Challenger Tour and the 2021 ITF Women's World Tennis Tour. It took place in Prague, Czech Republic from 3 to 9 May 2021.
The 2021 Moneta Czech Open was a professional tennis tournament played on clay courts. It was the 28th edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Prostějov, Czech Republic between 14 and 20 June 2021.
The 2021 Open Castilla y León was a professional tennis tournament played on outdoor hard courts. It was the 35th edition of the tournament and part of the 2021 ATP Challenger Tour. It took place in El Espinar, Segovia, Spain, between 26 July – 1 August 2021.
The 2021 Svijany Open was a professional tennis tournament played on clay courts. It was the 8th edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Liberec, Czech Republic between 2 and 8 August 2021.
The 2021 IBG Prague Open was a professional tennis tournament played on clay courts. It was part of the 2021 ATP Challenger Tour. It took place in Prague, Czech Republic between 23 and 29 August 2021.
The 2021 Slovak Open II was a professional tennis tournament played on hard courts. It was the 23rd edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Bratislava, Slovakia between 8 and 14 November 2021.
The 2022 Sparta Prague Open was a professional tennis tournament played on clay courts. It was part of the 2022 ATP Challenger Tour. It took place in Prague, Czech Republic between 18 and 24 April 2022.
The 2022 Ostra Group Open was a professional tennis tournament played on clay courts. It was the 19th edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 25 April and 1 May.
The 2022 UniCredit Czech Open was a professional tennis tournament played on clay courts. It was the 29th edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Prostějov, Czech Republic between 30 May and 4 June 2022.
The 2022 IBG Prague Open was a professional tennis tournament played on clay courts. It was part of the 2022 ATP Challenger Tour. It took place in Prague, Czech Republic between 22 and 28 August 2022.
The 2023 Advantage Cars Prague Open was a tournament played on outdoor clay. It was the 30th edition for men and 18th for women, which were respectively part of the 2023 ATP Challenger Tour and the 2023 ITF Women's World Tennis Tour. It took place in Prague, Czech Republic between 1 and 7 May 2023.
The 2023 UniCredit Czech Open was a professional tennis tournament played on clay courts. It was the 30th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Prostějov, Czech Republic between 5 and 10 June 2023.
The 2023 Tampere Open was a professional tennis tournament played on clay courts. It was the 41st edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Tampere, Finland, between 17 and 23 July 2023.
The 2023 Zug Open was a professional tennis tournament played on outdoor clay courts. It was the 2nd edition of the tournament and part of the 2023 ATP Challenger Tour. It took place in Zug, Switzerland between 24 and 30 July 2023.
