The 2021 Sofia Open was a men's

tennis Tennis is a List of racket sports, racket sport that is played either individually against a single opponent (singles (tennis), singles) or between two teams of two players each (doubles (tennis), doubles). Each player uses a tennis racket st ...

tournament played on indoor

hard court A hardcourt (or hard court) is a type of surface or floor on which a sport is played, most usually in reference to tennis courts. It is typically made of rigid materials such as Asphalt concrete, asphalt or concrete, and covered with acrylic resin ...

s. It was the sixth edition of the

Sofia Open Sofia Open may refer to: *ATP Sofia Open, an ATP 250 Series tennis tournament started in 2016. *Sofia Open (1980–81), a defunct Grand Prix tennis event played from 1980 to 1981. *Vitosha New Otani Open, a defunct WTA Tour event from 1988 to 1989. ...

as part of the

ATP World Tour 250 series The ATP 250 tournaments (previously known as the ''ATP World Tour 250'' tournaments, ''ATP International Series'', and ''ATP World Series'') are the lowest tier of annual men's tennis tournaments on the main ATP Tour, after the four Grand Slam (t ...

of the

2021 ATP Tour The 2021 ATP Tour was the global elite men's professional tennis circuit organised by the Association of Tennis Professionals (ATP) for the 2021 tennis season. The 2021 ATP Tour calendar comprised the Grand Slam tournaments (supervised by the I ...

. It was played at the

Arena Armeec Arena Sofia (, ) is a multi-purpose indoor arena located in Sofia, Bulgaria. Opened in July 2011, it has a seating capacity of 12,373. It was formerly called Arena Armeets after the Bulgarian insurance company Armeets purchased the naming rights, ...

Sofia Sofia is the Capital city, capital and List of cities and towns in Bulgaria, largest city of Bulgaria. It is situated in the Sofia Valley at the foot of the Vitosha mountain, in the western part of the country. The city is built west of the Is ...

, Bulgaria, from 27 September to 3 October 2021. First-seeded

Jannik Sinner Jannik Sinner (born 16 August 2001) is an Italian professional tennis player. He is currently ranked as the world No. 1 in men's singles by the ATP, the first Italian to reach the top ranking. Sinner has won 19 singles titles on the ATP Tour ...

won the singles title.

Finals

Singles

defeated

Gaël Monfils Gaël Sébastien Monfils (; born 1 September 1986) is a French professional tennis player. He has been ATP rankings, ranked as high as world No. 6 in men's singles by the Association of Tennis Professionals (ATP), achieved in November 2016. Mon ...

6–3, 6–4

Doubles

Jonny O'Mara Jonny O'Mara (born 2 March 1995) is a British tennis player. He has a career high ATP doubles ranking of 44 achieved on 20 May 2019. He also has a career high ATP singles ranking of World No. 489 achieved on 10 April 2017. Career O'Mara won the ...

Ken Skupski Ken Skupski Jr. (born 9 April 1983) is a British former professional tennis player who specialised in doubles. He reached his career-high ATP doubles ranking of world No. 44 in July 2010, and won seven titles on the ATP Tour, most notably the ...

defeated

Oliver Marach Oliver Marach (born 16 July 1980) is a former Austrian professional tennis player who primarily specialised in doubles. He achieved his highest singles ranking of world No. 82 in August 2005, but achieved most of his success in doubles where he ...

Philipp Oswald Philipp Oswald (; born 23 January 1986) is an Austrian former professional tennis player who primarily played doubles events on the ATP Tour. On 7 December 2009, he reached his highest ATP singles ranking of world No. 206, and his highest doubl ...

, 6–3, 6–4

Singles main-draw entrants

Seeds

*¹ Rankings are as of 20 September 2021.На турнире Sofia Open сыграют теннисисты из ТОП-20 рейтинга АТР
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Other entrants

The following players received wildcards into the main draw: *

Adrian Andreev Adrian Andreev (, born 12 May 2001) is a Bulgarian professional tennis player, who competes mainly on the ATP Challenger Tour. He has a career-high ATP singles ranking of World No. 183 achieved on 18 September 2023. He won the 2018 US Open – B ...

Dimitar Kuzmanov Dimitar Kuzmanov (, ; nickname: Miko; born 28 July 1993) is a Bulgarian professional tennis player. He competes on the ATP Challenger Tour. His career-high singles ranking is No. 159 achieved on 29 August 2022 and his best doubles ranking is No. ...

Alexandar Lazarov Alexandar Lazarov (, born 6 November 1997) is a Bulgarian professional tennis player. His career-high singles ranking is world No. 272 achieved on 14 November 2022 and his best doubles ranking is No. 359 achieved on 3 February 2020. Professiona ...

The following players received entry from the qualifying draw: *

Egor Gerasimov Yegor Alekseyevich Gerasimov () or Yahor Alyakseyevich Herasimaŭ (; born 11 November 1992 in Minsk) is a Belarusian professional tennis player. He has a career high ATP singles ranking of world No. 65, which he achieved on 24 February 2020. He ...

Illya Marchenko Illya Vasylovych Marchenko (; born 8 September 1987) is a Ukrainian tennis player. He has a career high in singles of World No. 49 achieved on 26 September 2016 and of No. 268 in doubles achieved on 25 August 2014. On the ATP Tour, Marchenko reac ...

Pedro Martínez Pedro Jaime Martínez (born October 25, 1971) is a Dominican-American former professional baseball starting pitcher, who played in Major League Baseball (MLB) from to , for five teams—most notably the Boston Red Sox from to . As of 2023, M ...

Andreas Seppi Andreas Seppi (born 21 February 1984) is an Italian former professional tennis player. He reached a career-high singles ranking of world No. 18 on 28 January 2013. He became the first Italian to win a title on all three surfaces. Personal lif ...

The following player received entry as a lucky loser: *

Kamil Majchrzak Kamil Majchrzak (; born 13 January 1996) is a Polish professional tennis player. He has a career high ATP singles ranking of World No. 75 achieved on 28 February 2022 and a career high ATP doubles ranking of World No. 241 achieved on 8 August 20 ...

Withdrawals

;Before the tournament *

Roberto Bautista Agut Roberto Bautista Agut (; born 14 April 1988) is a Spanish professional tennis player. He has been ATP rankings, ranked as high as world No. 9 by the Association of Tennis Professionals, ATP in singles, achieved on 4 November 2019. Bautista Agut ...

→ replaced by James Duckworth *

Alexander Bublik Alexander Stanislavovich Bublik (; born 17 June 1997) is a Russian-born Kazakhstani professional tennis player. He has a career-high Association of Tennis Professionals, ATP singles ranking of world No. 17, achieved on 6 May 2024 and a doubles ...

→ replaced by

Marin Čilić Marin Čilić (; born 28 September 1988) is a Croatian professional tennis player. He has been ranked world No. 3 in men's singles by the Association of Tennis Professionals (ATP), achieved on 28 January 2018. Čilić has won 21 ATP Tour-level si ...

→ replaced by

Gianluca Mager Gianluca Mager (born 1 December 1994) is an Italian tennis player. He has a career-high ATP singles ranking of No. 62 achieved on 22 November 2021. He also has a career high ATP doubles ranking of No. 310 achieved on 10 June 2019. Personal Info ...

Mackenzie McDonald Michael Mackenzie Lowe McDonald (born April 16, 1995) is an American professional tennis player. He has a career-high singles ATP rankings, ranking of world No. 37, achieved on October 16, 2023 and a doubles ranking of No. 49, achieved on Octobe ...

→ replaced by

Emil Ruusuvuori Emil Ruusuvuori (; born 2 April 1999) is a Finnish professional tennis player. He reached a career high Association of Tennis Professionals, ATP singles ranking of World No. 37 on 3 April 2023. He is currently the No. 2 Finnish singles tennis pl ...

;During the tournament *

Ilya Ivashka Ilya Uladzimiravich Ivashka (; ; born 24 February 1994) is a Belarusian professional tennis player. Ivashka has a career-high singles ranking by the Association of Tennis Professionals (ATP) of No. 40, achieved on 20 June 2022. He also has a car ...

Doubles main-draw entrants

Seeds

*¹ Rankings are as of 20 September 2021.

Other entrants

The following pairs received wildcards into the doubles main draw: *

Alexander Donski Alexander Donski (; born 1 August 1998) is a Bulgarian professional tennis player active on both the ITF Men's World Tennis Tour and the ATP Challenger Tour. Donski holds the third highest-ever ATP doubles ranking by a Bulgarian, achieving a car ...

The following pair received entry as alternates: * Plamen Milushev /

Radoslav Shandarov Radoslav Shandarov (born 11 July 1996) is a Bulgarian tennis player. Shandarov has a career high ATP doubles ranking of 1445 achieved on 11 December 2017. Shandarov made his ATP main draw debut at the 2018 Sofia Open as an alternate in the do ...

Withdrawals

;Before the tournament *

Jérémy Chardy Jérémy Chardy (; born 12 February 1987) is a French tennis coach and a former professional player. He has won one ATP Tour singles title, in Stuttgart in 2009. His best major performance in singles was reaching the quarterfinals of the 2013 ...

Hugo Nys Hugo Nys (; born 16 February 1991) is a Monégasque professional tennis player who previously represented France until 2019. A doubles specialist, he reached his highest ATP doubles ranking of No. 12 on 12 June 2023 and singles ranking of No. 3 ...

→ replaced by

André Göransson André Göransson (born 30 April 1994) is a Swedish tennis player who specializes in doubles. He has a career-high ATP doubles ranking of world No. 26, achieved on 19 May 2025. He is the current No. 1 Swedish doubles player. Göransson has won ...

Matthew Ebden Matthew Ebden (born 26 November 1987) is an Australian professional tennis player who reached a career high of List of ATP number 1 ranked doubles tennis players, world No. 1 in doubles. Ebden is a three-time Grand Slam (tennis), Grand Slam ch ...

Jonathan Erlich Jonathan Dario "Yoni" Erlich (; born 5 April 1977) is an Israeli former professional tennis player. During his career, he was mainly a doubles specialist, having won the men's doubles title at the 2008 Australian Open – Men's doubles, 2008 Aus ...

→ replaced by

Dominic Inglot Dominic Inglot ( ; born 6 March 1986) is a British former professional tennis player and a Davis Cup champion. A doubles specialist; he made the final of twenty seven ATP World Tour events, winning fourteen, including the Citi Open and Swiss ...

Sander Gillé Sander Gillé (born 15 January 1991) is a Belgian professional tennis player who specializes in doubles. He has a career-high doubles ranking of World No. 18 by the ATP, achieved on 25 September 2023. He also has a career-high singles ranking of ...

Joran Vliegen Joran Vliegen (born 7 July 1993) is a Belgian professional tennis player who specializes in doubles. He has a career high ATP doubles ranking of World No. 17 achieved on 7 August 2023. He also has a career high singles ranking of World No. 508 a ...

→ replaced by

Marcos Giron Marcos Andres Giron ( ; born July 24, 1993; ) is an American professional tennis player. He has a career-high singles ranking of world No. 37 achieved on August 5, 2024 and a doubles ranking of No. 194 achieved on August 1, 2022. Giron won the s ...

→ replaced by

Lorenzo Musetti Lorenzo Musetti (; born 3 March 2002) is an Italian professional tennis player. He has a career-high ATP rankings, ATP singles ranking of world No. 6, achieved on 9 June 2025 and a doubles ranking of No. 142, achieved on 1 April 2024. Musetti has ...

Andrea Vavassori Andrea Vavassori (; born 5 May 1995) is an Italian professional tennis player. He has a career high ATP doubles ranking of world No. 6, achieved on 14 October 2024 and a singles ranking of world No. 128, achieved on 19 June 2023. Vavassori is a ...

Jaume Munar Jaume Antoni Munar Clar (; ; born 5 May 1997) is a Spanish professional tennis player. Munar has a career-high ATP singles ranking of world No. 52 achieved on 20 May 2019 and a doubles ranking of No. 98 achieved on 21 April 2025. He is currently ...

→ replaced by Plamen Milushev /

References

External links

Official websiteTournament page at ATPWorldTour.com
{{2021 ATP Tour Sofia Open