St. Petersburg 2021
Champion
M. Cilic
def. T. Fritz · 7-6, 4-6, 6-4
Results
Draw →St. Petersburg - Final
Fin.
M. Cilic7746
T. Fritz6364St. Petersburg - Quarter-finals
Fin.
A. Rublev34
B. Van De Zandschulp66Fin.
R. Bautista-Agut463M. Cilic636Fin.
J-L. Struff66
D. Shapovalov43St. Petersburg - 1/8-finals
Fin.
R. Bautista-Agut66M. McDonald32Fin.
M. Cilic6616K. Khachanov4774Fin.
T. Fritz776T. PaulSt. Petersburg - 1/16-finals
Fin.
A. Mannarino33K. Khachanov66Fin.
M. Cilic66A. Ramos23Fin.
T. Fritz66
E. Ruusuvuori14Qualifying · St. Petersburg - Final
Fin.
D. Popko624E. Ruusuvuori776Fin.
B. Van De Zandschulp566?E. Donskoy732
Fin.
M. Kecmanovic362
Y. NishiokaQualifying · St. Petersburg - Semi-finals
Fin.
?G. Simon03
E. Ruusuvuori66Fin.
B. Bonzi6642D. Popko4776Fin.
?E. Donskoy67
?M. Ymer2
