Zizou Bergs Zizou Bergs (; born 3 June 1999) is a Belgian professional tennis player. He has a career-high Association of Tennis Professionals, ATP singles ranking of world No. 49, achieved on 19 May 2025 and a doubles ranking of No. 265, achieved on 27 Nove ...

was the defending champion but lost in the second round to

Kacper Żuk Kacper Żuk (born 21 January 1999) is a former Polish professional tennis player. Żuk has a career high ATP singles ranking of World No. 162 achieved on 13 September 2021. He also has a career-high ATP doubles ranking of World No. 278, achieved ...

Evgenii Tiurnev Evgenii Igorevich Tiurnev ( rus, Евгений Игоревич Тюрнев, , jɪvˈɡʲenʲɪj ˈtʲurnʲɪf; born 8 April 1997) is a Russian tennis player. He has career-high rankings of World No. 265 in singles achieved on 14 February 2022 ...

won the title after defeating Żuk 6–4, 6–2 in the final.

Seeds

Draw

Finals

Top half

Bottom half

References

External links

Main drawQualifying draw
{{DEFAULTSORT:2021 Saint Petersburg Challenger II - 1 Saint Petersburg Challenger II - 1 St. Petersburg Challenger