Jannik Sinner Jannik Sinner (; ; born 16 August 2001) is an Italian professional tennis player. He has been ranked as high as world No. 9 by the Association of Tennis Professionals (ATP), achieved on 1 November 2021, and world No. 124 in doubles, achieved on 2 ...

was the defending champion and successfully defended his title, defeating

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

in the final, 6–3, 6–4.

Seeds

The top four

seeds A seed is an Plant embryogenesis, embryonic plant enclosed in a testa (botany), protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, includ ...

received a bye into the second round.

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky loser

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

External links

Main draw

Qualifying draw
{{DEFAULTSORT:Sofia Open - Singles, 2021 2021 ATP Tour

2021 Singles 1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length ...