St. Petersburg Open 2021 - Đơn

Marin Čilić
| runner = Taylor Fritz
| score = 7–6(7–3), 4–6, 6–4
| draw = 28 (4 / 3)
| seeds = 8
| type = singles doubles
| before_name = St. Petersburg Open
| after_name = St. Petersburg Open
}}

Andrey Rublev là đương kim vô địch, nhưng thua ở vòng tứ kết trước Botic van de Zandschulp.

Marin Čilić là nhà vô địch, đánh bại Taylor Fritz trong trận chung kết, 7–6(7–3), 4–6, 6–4.

Hạt giống
4 hạt giống hàng đầu được miễn vào vòng 2.
Andrey Rublev (Tứ kết)
Denis Shapovalov (Tứ kết)
Roberto Bautista Agut (Tứ kết)
Aslan Karatsev (Vòng 2)
Taylor Fritz (Chung kết)
Karen Khachanov (Vòng 2)
Alexander Bublik (Vòng 2)
Sebastian Korda (Vòng 2)
}}

Kết quả

Chung kết
Botic van de Zandschulp
|RD1-score1-1=3
|RD1-score1-2=3
|RD1-score1-3=
|RD1-seed2=
|RD1-team2= Marin Čilić
|RD1-score2-1=6
|RD1-score2-2=6
|RD1-score2-3=

|RD1-seed3=5
|RD1-team3= Taylor Fritz
|RD1-score3-1=5
|RD1-score3-2=6
|RD1-score3-3=6
|RD1-seed4=
|RD1-team4= Jan-Lennard Struff
|RD1-score4-1=7
|RD1-score4-2=1
|RD1-score4-3=3

|RD2-seed1=&nbsp;
|RD2-team1= Marin Čilić
|RD2-score1-1=77
|RD2-score1-2=4
|RD2-score1-3=6
|RD2-seed2=5
|RD2-team2= Taylor Fritz
|RD2-score2-1=63
|RD2-score2-2=6
|RD2-score2-3=4
}}

Nửa trên
L Đere
| RD1-score03-1=3
| RD1-score03-2=2
| RD1-score03-3=
| RD1-seed04=
| RD1-team04= I Ivashka
| RD1-score04-1=6
| RD1-score04-2=6
| RD1-score04-3=

| RD1-seed05=Q
| RD1-team05= B van de Zandschulp
| RD1-score05-1=6
| RD1-score05-2=6
| RD1-score05-3=
| RD1-seed06=Q
| RD1-team06= Y Nishioka
| RD1-score06-1=2
| RD1-score06-2=2
| RD1-score06-3=

| RD1-seed07=WC
| RD1-team07= N Serdarušić
| RD1-score07-1=62
| RD1-score07-2=5
| RD1-score07-3=
| RD1-seed08=8
| RD1-team08= S Korda
| RD1-score08-1=77
| RD1-score08-2=7
| RD1-score08-3=

| RD1-seed11=Q
| RD1-team11= E Gerasimov
| RD1-score11-1=5
| RD1-score11-2=4
| RD1-score11-3=
| RD1-seed12=
| RD1-team12= M McDonald
| RD1-score12-1=7
| RD1-score12-2=6
| RD1-score12-3=

| RD1-seed13=
| RD1-team13= M Čilić
| RD1-score13-1=6
| RD1-score13-2=6
| RD1-score13-3=
| RD1-seed14=
| RD1-team14= A Ramos Viñolas
| RD1-score14-1=2
| RD1-score14-2=3
| RD1-score14-3=

| RD1-seed15=
| RD1-team15= A Mannarino
| RD1-score15-1=3
| RD1-score15-2=3
| RD1-score15-3=
| RD1-seed16=6
| RD1-team16= K Khachanov
| RD1-score16-1=6
| RD1-score16-2=6
| RD1-score16-3=

| RD2-seed01=1
| RD2-team01= A Rublev
| RD2-score01-1=6
| RD2-score01-2=6
| RD2-score01-3=
| RD2-seed02=
| RD2-team02= I Ivashka
| RD2-score02-1=4
| RD2-score02-2=4
| RD2-score02-3=

| RD2-seed03=Q
| RD2-team03= B van de Zandschulp
| RD2-score03-1=6
| RD2-score03-2=7
| RD2-score03-3=
| RD2-seed04=8
| RD2-team04= S Korda
| RD2-score04-1=2
| RD2-score04-2=5
| RD2-score04-3=

| RD2-seed05=3
| RD2-team05= R Bautista Agut
| RD2-score05-1=6
| RD2-score05-2=6
| RD2-score05-3=
| RD2-seed06=
| RD2-team06= M McDonald
| RD2-score06-1=3
| RD2-score06-2=2
| RD2-score06-3=

| RD2-seed07=
| RD2-team07= M Čilić
| RD2-score07-1=6
| RD2-score07-2=61
| RD2-score07-3=6
| RD2-seed08=6
| RD2-team08= K Khachanov
| RD2-score08-1=4
| RD2-score08-2=77
| RD2-score08-3=4

| RD3-seed01=1
| RD3-team01= A Rublev
| RD3-score01-1=3
| RD3-score01-2=4
| RD3-score01-3=
| RD3-seed02=Q
| RD3-team02= B van de Zandschulp
| RD3-score02-1=6
| RD3-score02-2=6
| RD3-score02-3=

| RD3-seed03=3
| RD3-team03= R Bautista Agut
| RD3-score03-1=4
| RD3-score03-2=6
| RD3-score03-3=3
| RD3-seed04=
| RD3-team04= M Čilić
| RD3-score04-1=6
| RD3-score04-2=3
| RD3-score04-3=6

| RD4-seed01=Q
| RD4-team01= B van de Zandschulp
| RD4-score01-1=3
| RD4-score01-2=3
| RD4-score01-3=
| RD4-seed02=
| RD4-team02= M Čilić
| RD4-score02-1=6
| RD4-score02-2=6
| RD4-score02-3=
}}

Nửa dưới
T Fritz
| RD1-score01-1=6
| RD1-score01-2=6
| RD1-score01-3=
| RD1-seed02=Q
| RD1-team02= E Ruusuvuori
| RD1-score02-1=1
| RD1-score02-2=4
| RD1-score02-3=

| RD1-seed03=
| RD1-team03= P Martínez
| RD1-score03-1=3
| RD1-score03-2=2
| RD1-score03-3=
| RD1-seed04=
| RD1-team04= T Paul
| RD1-score04-1=6
| RD1-score04-2=6
| RD1-score04-3=

| RD1-seed05=
| RD1-team05= J Millman
| RD1-score05-1=6
| RD1-score05-2=6
| RD1-score05-3=
| RD1-seed06=WC
| RD1-team06= Y Oliel
| RD1-score06-1=1
| RD1-score06-2=1
| RD1-score06-3=

| RD1-seed09=7
| RD1-team09= A Bublik
| RD1-score09-1=6
| RD1-score09-2=6
| RD1-score09-3=
| RD1-seed10=WC
| RD1-team10= E Tiurnev
| RD1-score10-1=3
| RD1-score10-2=4
| RD1-score10-3=

| RD1-seed11=
| RD1-team11= J-L Struff
| RD1-score11-1=77
| RD1-score11-2=6
| RD1-score11-3=
| RD1-seed12=
| RD1-team12= J Duckworth
| RD1-score12-1=63
| RD1-score12-2=3
| RD1-score12-3=

| RD1-seed13=
| RD1-team13= F Delbonis
| RD1-score13-1=2
| RD1-score13-2=61
| RD1-score13-3=
| RD1-seed14=PR
| RD1-team14= P Andújar
| RD1-score14-1=6
| RD1-score14-2=77
| RD1-score14-3=

| RD2-seed01=5
| RD2-team01= T Fritz
| RD2-score01-1=77
| RD2-score01-2=6
| RD2-score01-3=
| RD2-seed02=
| RD2-team02= T Paul
| RD2-score02-1=63
| RD2-score02-2=4
| RD2-score02-3=

| RD2-seed03=
| RD2-team03= J Millman
| RD2-score03-1=6
| RD2-score03-2=6
| RD2-score03-3=
| RD2-seed04=4
| RD2-team04= A Karatsev
| RD2-score04-1=3
| RD2-score04-2=2
| RD2-score04-3=

| RD2-seed05=7
| RD2-team05= A Bublik
| RD2-score05-1=4
| RD2-score05-2=3
| RD2-score05-3=
| RD2-seed06=
| RD2-team06= J-L Struff
| RD2-score06-1=6
| RD2-score06-2=6
| RD2-score06-3=

| RD2-seed07=PR
| RD2-team07= P Andújar
| RD2-score07-1=6
| RD2-score07-2=3
| RD2-score07-3=0
| RD2-seed08=2
| RD2-team08= D Shapovalov
| RD2-score08-1=2
| RD2-score08-2=6
| RD2-score08-3=6

| RD3-seed01=5
| RD3-team01= T Fritz
| RD3-score01-1=6
| RD3-score01-2=6
| RD3-score01-3=
| RD3-seed02=
| RD3-team02= J Millman
| RD3-score02-1=4
| RD3-score02-2=2
| RD3-score02-3=

| RD3-seed03=
| RD3-team03= J-L Struff
| RD3-score03-1=6
| RD3-score03-2=6
| RD3-score03-3=
| RD3-seed04=2
| RD3-team04= D Shapovalov
| RD3-score04-1=4
| RD3-score04-2=3
| RD3-score04-3=

| RD4-seed01=5
| RD4-team01= T Fritz
| RD4-score01-1=5
| RD4-score01-2=6
| RD4-score01-3=6
| RD4-seed02=
| RD4-team02= J-L Struff
| RD4-score02-1=7
| RD4-score02-2=1
| RD4-score02-3=3
}}

Vòng loại
Hạt giống
Botic van de Zandschulp (Vượt qua vòng loại)
Benjamin Bonzi (Vòng 1)
Federico Coria (Vòng 1)
Miomir Kecmanović (Vòng loại cuối cùng)
Emil Ruusuvuori (Vượt qua vòng loại)
Yoshihito Nishioka (Vượt qua vòng loại)
Mikael Ymer (Vòng 1)
Egor Gerasimov (Vượt qua vòng loại)
}}

Vượt qua vòng loại
Botic van de Zandschulp
Emil Ruusuvuori
Egor Gerasimov
Yoshihito Nishioka
}}

Kết quả vòng loại
Vòng loại thứ 1
Botic van de Zandschulp
| RD1-score1-1=6
| RD1-score1-2=
| RD1-score1-3=
| RD1-seed2=Alt
| RD1-team2= Marc Polmans
| RD1-score2-1=6r
| RD1-score2-2=
| RD1-score2-3=

| RD1-seed3=Alt
| RD1-team3= Evgeny Donskoy
| RD1-score3-1=6
| RD1-score3-2=7
| RD1-score3-3=
| RD1-seed4=7
| RD1-team4= Mikael Ymer
| RD1-score4-1=2
| RD1-score4-2=5
| RD1-score4-3=

| RD2-seed1=1
| RD2-team1= Botic van de Zandschulp
| RD2-score1-1=5
| RD2-score1-2=6
| RD2-score1-3=6
| RD2-seed2=Alt
| RD2-team2= Evgeny Donskoy
| RD2-score2-1=7
| RD2-score2-2=3
| RD2-score2-3=2
}}

Vòng loại thứ 2
Benjamin Bonzi
| RD1-score1-1=6
| RD1-score1-2=64
| RD1-score1-3=2
| RD1-seed2=WC
| RD1-team2= Dmitry Popko
| RD1-score2-1=4
| RD1-score2-2=77
| RD1-score2-3=6

| RD1-seed3=PR
| RD1-team3= Gilles Simon
| RD1-score3-1=0
| RD1-score3-2=3
| RD1-score3-3=
| RD1-seed4=5
| RD1-team4= Emil Ruusuvuori
| RD1-score4-1=6
| RD1-score4-2=6
| RD1-score4-3=

| RD2-seed1=WC
| RD2-team1= Dmitry Popko
| RD2-score1-1=62
| RD2-score1-2=4
| RD2-score1-3=
| RD2-seed2=5
| RD2-team2= Emil Ruusuvuori
| RD2-score2-1=77
| RD2-score2-2=6
| RD2-score2-3=
}}

Vòng loại thứ 3
Federico Coria
| RD1-score1-1=3
| RD1-score1-2=4
| RD1-score1-3=
| RD1-seed2=&nbsp;
| RD1-team2= Radu Albot
| RD1-score2-1=6
| RD1-score2-2=6
| RD1-score2-3=

| RD1-seed3=&nbsp;
| RD1-team3= Damir Džumhur
| RD1-score3-1=1
| RD1-score3-2=66
| RD1-score3-3=
| RD1-seed4=8
| RD1-team4= Egor Gerasimov
| RD1-score4-1=6
| RD1-score4-2=78
| RD1-score4-3=

| RD2-seed1=&nbsp;
| RD2-team1= Radu Albot
| RD2-score1-1=62
| RD2-score1-2=4
| RD2-score1-3=
| RD2-seed2=8
| RD2-team2= Egor Gerasimov
| RD2-score2-1=77
| RD2-score2-2=6
| RD2-score2-3=
}}

Vòng loại thứ 4
Miomir Kecmanović
| RD1-score1-1=2
| RD1-score1-2=6
| RD1-score1-3=6
| RD1-seed2=WC
| RD1-team2= Evgeny Karlovskiy
| RD1-score2-1=6
| RD1-score2-2=4
| RD1-score2-3=1

| RD1-seed3=Alt
| RD1-team3= Roman Safiullin
| RD1-score3-1=5
| RD1-score3-2=2
| RD1-score3-3=
| RD1-seed4=6
| RD1-team4= Yoshihito Nishioka
| RD1-score4-1=7
| RD1-score4-2=6
| RD1-score4-3=

| RD2-seed1=4
| RD2-team1= Miomir Kecmanović
| RD2-score1-1=3
| RD2-score1-2=6
| RD2-score1-3=2
| RD2-seed2=6
| RD2-team2= Yoshihito Nishioka
| RD2-score2-1=6
| RD2-score2-2=4
| RD2-score2-3=6
}}

Tham khảo

Liên kết ngoài
Kết quả vòng đấu chính
Kết quả vòng loại