Alexander Zverev Alexander "Sascha" Zverev (; born 20 April 1997) is a German professional tennis player and the current world No. 3. He has won 24 ATP Tour titles in singles and two in doubles, and has been runner-up at three Grand Slam (tennis)#Tournaments, ma ...

was the defending champion from when the event was held in

2019 This was the year in which the first known human case of COVID-19 was documented, preceding COVID-19 pandemic, the pandemic which was declared by the World Health Organization the following year. Up to that point, 2019 had been described as ...

, but chose not to defend his title.

Casper Ruud Casper Ruud (; born 22 December 1998) is a Norwegian professional tennis player. He has been ATP rankings, ranked as high as world No. 2 in men's singles by the Association of Tennis Professionals (ATP), achieved in September 2022, making him t ...

won the title, defeating

Denis Shapovalov Denis Viktorovich Shapovalov (born ) is a Canadian professional tennis player. He has been ATP rankings, ranked as high as world No. 10 in singles by the Association of Tennis Professionals, ATP, which he first achieved on September 21, 2020. Sh ...

in the final, 7–6^(8–6), 6–4.

Seeds

The top four

seeds In botany, a seed is a plant structure containing an embryo and stored nutrients in a protective coat called a ''testa''. More generally, the term "seed" means anything that can be sown, which may include seed and husk or tuber. Seeds are the ...

received a bye into the second round.

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky loser

Daniel Altmaier Daniel Altmaier (; born 12 September 1998) is a German professional tennis player. He has a career high ATP singles ranking of world No. 47, achieved on 2 October 2023. He is the current German No. 2. Personal life Altmaier's father Jurij is Ukr ...

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

External links

Main draw

Qualifying draw
{{DEFAULTSORT:Geneva Open - Singles,2021

Singles Singles are people not in a committed relationship. Singles may also refer to: Film and television * ''Singles'' (miniseries), a 1984 Australian television series * ''Singles'' (1992 film), written and directed by Cameron Crowe * ''Singles'' ...