Dimitar Kuzmanov is a Bulgarian professional tennis player. He competes mostly on the ATP Challenger Tour. His highest singles ranking is No. 159 achieved on 29 August 2022, whilst his best doubles ranking is No. 438 achieved on 1 April 2019.
The 2016 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the inaugural edition of the Sofia Open as part of the ATP World Tour 250 series of the 2016 ATP World Tour. It took place at the Arena Armeec in Sofia, Bulgaria, from 1 February until 7 February 2016. First-seeded Roberto Bautista Agut won the singles title.
Alexandar Lazarov is a Bulgarian professional tennis player. His highest singles ranking is No. 272 achieved on 14 November 2022, whilst his best doubles ranking is No. 359 achieved on 3 February 2020.
The 2016 Open de Nice Côte d'Azur was a men's tennis tournament played on outdoor clay courts. It was the 32nd and final edition of the Open de Nice Côte d'Azur and part of the ATP World Tour 250 series of the 2016 ATP World Tour. It took place at the Nice Lawn Tennis Club in Nice, France, from 15 May until 21 May 2016. The tournament was replaced on the ATP World Tour by the Lyon Open. First-seeded Dominic Thiem won the singles title.
The 2017 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the second edition of the Sofia Open as part of the ATP World Tour 250 series of the 2017 ATP World Tour. It took place at the Arena Armeec in Sofia, Bulgaria, from 5 February until 12 February 2017. Third-seeded Grigor Dimitrov won the singles title.
The 2017 Sibiu Open was a professional tennis tournament played on clay courts. It was the sixth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Sibiu, Romania between 18 and 24 September 2017.
The 2018 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the third edition of the Sofia Open as part of the ATP World Tour 250 series of the 2018 ATP World Tour. It took place at the Arena Armeec in Sofia, Bulgaria, from 5 February until 11 February 2018. Unseeded Mirza Bašić, who entered the main draw as a qualifier, won the singles title.
Adrian Andreev is a professional Bulgarian tennis player. He has a career-high ATP singles ranking of World No. 183 achieved on 18 September 2023. Andreev won the 2018 US Open Junior doubles title with Anton Matusevich. He has a career-high doubles ranking of world No. 584 achieved on 12 September 2022. He is currently the No. 3 Bulgarian player.
Alexander Donski is a Bulgarian tennis player.
The 2018 Lyon Open was a men's tennis tournament played on outdoor clay courts. It was the second edition of the Lyon Open and part of the ATP World Tour 250 series of the 2018 ATP World Tour. It took place in the city of Lyon, France, from May 20 through May 26, 2018.
The 2019 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 45th edition of the event, and part of the ATP Tour 500 Series of the 2019 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 21 October until 27 October 2019.
The 2020 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the fifth edition of the Sofia Open as part of the ATP Tour 250 series of the 2020 ATP Tour. Originally scheduled for 28 September to 4 October at the Arena Armeec in Sofia, Bulgaria, but due to the COVID-19 pandemic it was rescheduled to 8 November until 14 November 2020. Unseeded Jannik Sinner won the singles title.
The 2021 Antalya Open was a men's tennis tournament played on outdoor hard courts. It was the 4th edition of the event and part of the ATP Tour 250 series of the 2021 ATP Tour. The tournament took place in Antalya, Turkey, from January 7 to 13.
The 2021 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the sixth edition of the Sofia Open as part of the ATP World Tour 250 series of the 2021 ATP Tour. It was played at the Arena Armeec in Sofia, Bulgaria, from 27 September to 3 October 2021. First-seeded Jannik Sinner won the singles title.
The 2021 Sánchez-Casal Cup was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Barcelona, Spain between 4 and 10 October 2021.
The 2022 Città di Forlì was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Forlì, Italy between 3 and 9 January 2022.
The 2022 Rafa Nadal Open was a professional tennis tournament played on hard courts. It was the fourth edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Manacor, Spain between 29 August and 4 September 2022.
The 2022 Sofia Open was a tennis tournament to be played on indoor hard courts. It was the 7th edition of the Sofia Open as part of the ATP World Tour 250 series of the 2022 ATP Tour. It was played at the Arena Armeec in Sofia, Bulgaria, from 26 September to 2 October 2022.
The 2022 HPP Open was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Helsinki, Finland between 14 and 20 November 2022.
The 2023 Sofia Open is a tennis tournament to be played on indoor hard courts. It will be its eighth edition and it is as part of the ATP 250 tournaments on the 2023 ATP Tour. It will be played at the Arena Sofia in Sofia, Bulgaria, from 5 November to 11 November 2023. The tournament replaced the 2023 edition of the Tel Aviv Open, which was canceled due to the 2023 Israel–Hamas war.
Daniil Medvedev [1] 
Nikola Mektić / 
Jürgen Melzer [2] 
