| Doubles | |
|---|---|
| 2021 Antalya Challenger | |
| Champions |  Denys Molchanov  Aleksandr Nedovyesov |
| Runners-up |  Luis David Martínez  David Vega Hernández |
| Final score | 3–6, 6–4, [18–16] |
This was the first edition of the tournament and first of two editions of the tournament to start the 2021 ATP Challenger Tour year. [1]
Denys Molchanov and Aleksandr Nedovyesov won the title after defeating Luis David Martínez and David Vega Hernández 3–6, 6–4, [18–16] in the final.
Luis David Martínez / David Vega Hernández (final) Denys Molchanov / Aleksandr Nedovyesov (champions)
Purav Raja / Ramkumar Ramanathan (first round)
Harri Heliövaara / 
Zdeněk Kolář (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | LD Martínez D Vega Hernández | 6 | 6 | ||||||||||||||||||||||||
| WC |  S Ağabigün E Kırkın | 1 | 4 | 1 | LD Martínez D Vega Hernández | 78 | 3 | [10] | |||||||||||||||||||
 R Matos F Meligeni Alves | 6 | 6 | R Matos F Meligeni Alves | 66 | 6 | [7] | |||||||||||||||||||||
 P Lorenzi T Seyboth Wild | 4 | 1 | 1 | LD Martínez D Vega Hernández | 6 | 6 | |||||||||||||||||||||
| 3 | P Raja R Ramanathan | 1 | 3 | Alt | A Giannessi L Musetti | 0 | 3 | ||||||||||||||||||||
| Alt | A Giannessi L Musetti | 6 | 6 | Alt | A Giannessi L Musetti | w/o | |||||||||||||||||||||
 E King N Pasha | 5 | 77 | [6] |  L Mayer  JP Varillas | |||||||||||||||||||||||
| L Mayer JP Varillas | 7 | 64 | [10] | 1 | LD Martínez D Vega Hernández | 6 | 4 | [16] | |||||||||||||||||||
| WC | M İlhan C İlkel | 1 | 2 | 2 | D Molchanov A Nedovyesov | 3 | 6 | [18] | |||||||||||||||||||
 T Huey  S Verbeek | 6 | 6 | T Huey S Verbeek | 6 | 63 | [10] | |||||||||||||||||||||
 L Margaroli  F Mergea | 2 | 6 | [1] | 4 | H Heliövaara Z Kolář | 3 | 77 | [8] | |||||||||||||||||||
| 4 | H Heliövaara Z Kolář | 6 | 4 | [10] | T Huey S Verbeek | 4 | 2 | ||||||||||||||||||||
 DE Galán  E Gómez | 4 | 6 | [10] | 2 | D Molchanov A Nedovyesov | 6 | 6 | ||||||||||||||||||||
 J Kovalík  M Safwat | 6 | 4 | [8] | DE Galán Gómez | 3 | 1 | |||||||||||||||||||||
| R Galloway A Lawson | 4 | 2 | 2 | D Molchanov A Nedovyesov | 6 | 6 | |||||||||||||||||||||
| 2 | D Molchanov A Nedovyesov | 6 | 6 | ||||||||||||||||||||||||
Denys Petrovych Molchanov is a Ukrainian tennis player playing on the ATP Challenger Tour winning 15 singles and 62 doubles titles. He has also won one ATP doubles title. On 5 January 2015 he reached his highest ATP singles ranking of World No. 169, whilst his highest doubles ranking of No. 63 was reached on 22 July 2019. He also played for the Ukraine Davis Cup team.
The 2018 Advantage Cars Prague Open, also known as Advantage Cars Prague Open by Sport-Technik Bohemia for sponsorship reasons, was a professional tennis tournament played on outdoor clay courts. It was the 25th (ATP) and fourth (ITF) editions of the tournament and was part of the 2018 ATP Challenger Tour and also of the 2018 ITF Women's Circuit as 14th edition of the tournament. It took place in Prague, Czech Republic, on 23–29 July 2018.
Andrey Golubev and Aleksandr Nedovyesov were the defending champions but chose not to defend their title.
The 2021 Antalya Challenger was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Antalya, Turkey between 25 and 31 January 2021.
The 2021 Antalya Challenger II was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Antalya, Turkey between 1 and 7 February 2021.
Denys Molchanov and Aleksandr Nedovyesov were the defending champions and successfully defended their title, defeating Robert Galloway and Alex Lawson 6–4, 7–6(7–2) in the final.
This was the first of seven editions of the tournament in the 2021 tennis season.
This was the second of seven editions of the tournament in the 2021 tennis season. Luis David Martínez and David Vega Hernández were the defending champions but lost in the quarterfinals to Nathaniel Lammons and Jackson Withrow.
There were no defending champions as the last edition of the tournament was canceled due to the COVID-19 pandemic.
This was the second edition of the tournament in the 2021 tennis season. Denys Molchanov and Aleksandr Nedovyesov were the defending champions but only Nedovyesov chose to defend his title, partnering Viktor Troicki. Nedovyesov lost in the semifinals to Nathan Pasha and Max Schnur.
The men's doubles of the 2021 I.ČLTK Prague Open tournament was played on clay in Prague, Czech Republic.
The 2021 Bratislava Open was a professional tennis tournament played on clay courts. It was the 2nd edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Bratislava, Slovakia between 7 and 13 June 2021.
Sander Gillé and Joran Vliegen were the defending champions but chose not to defend their title.
Martin Fischer and Philipp Oswald were the defending champions but chose not to defend their title.
This was the first edition of the tournament.
This was the first edition of the tournament.
The 2021 European Open was a men's tennis tournament played on indoor hard courts. It was the sixth edition of the European Open and part of the ATP Tour 250 series of the 2021 ATP Tour. It took place at the Lotto Arena in Antwerp, Belgium, from 18 October until 24 October 2021.
Denys Molchanov and Andrei Vasilevski were the defending champions but only Molchanov chose to defend his title, partnering Aleksandr Nedovyesov. Molchanov lost in the semifinals to Sadio Doumbia and Fabien Reboul.
Denys Molchanov and Andrey Rublev defeated Raven Klaasen and Ben McLachlan in the final, 4–6, 7–5, [10–7] to win the doubles tennis title at the 2022 Open 13 Provence. Rublev completed a double crown, having won the singles title earlier in the day.
Aleksandr Nedovyesov and Gonçalo Oliveira were the defending champions but chose not to defend their title.