St. Petersburg 2021 ATP
Final
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Marin Cilic | m. | Taylor Fritz | 7-6(3) 4-6 6-4 |
Semifinal
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Taylor Fritz | m. | Jan Lennard Struff | 5-7 6-1 6-3 |
| Marin Cilic | m. | Botic Van De Zandschulp | 6-3 6-3 |
Perempat final
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Jan Lennard Struff | m. | Denis Shapovalov | 6-4 6-3 |
| Taylor Fritz | m. | John Millman | 6-4 6-2 |
| Marin Cilic | m. | Roberto Bautista Agut | 6-4 3-6 6-3 |
| Botic Van De Zandschulp | m. | Andrey Rublev | 6-3 6-4 |
Babak 16 besar
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Denis Shapovalov | m. | Pablo Andujar | 2-6 6-3 6-0 |
| Jan Lennard Struff | m. | Alexander Bublik | 6-4 6-3 |
| John Millman | m. | Aslan Karatsev | 6-3 6-2 |
| Taylor Fritz | m. | Tommy Paul | 7-6(3) 6-4 |
| Marin Cilic | m. | Karen Khachanov | 6-4 6-7(1) 6-4 |
| Roberto Bautista Agut | m. | Mackenzie Mcdonald | 6-3 6-2 |
| Botic Van De Zandschulp | m. | Sebastian Korda | 6-2 7-5 |
| Andrey Rublev | m. | Ilya Ivashka | 6-4 6-4 |
Babak 32 besar
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Pablo Andujar | m. | Federico Delbonis | 6-2 7-6(1) |
| Jan Lennard Struff | m. | James Duckworth | 7-6(3) 6-3 |
| Alexander Bublik | m. | Evgenii Tiurnev | 6-3 6-4 |
| John Millman | m. | Yshai Oliel | 6-1 6-1 |
| Tommy Paul | m. | Pedro Martinez | 6-3 6-2 |
| Taylor Fritz | m. | Emil Ruusuvuori | 6-1 6-4 |
| Karen Khachanov | m. | Adrian Mannarino | 6-3 6-3 |
| Marin Cilic | m. | Albert Ramos | 6-2 6-3 |
| Mackenzie Mcdonald | m. | Egor Gerasimov | 7-5 6-4 |
| Sebastian Korda | m. | Nino Serdarusic | 7-6(2) 7-5 |
| Botic Van De Zandschulp | m. | Yoshihito Nishioka | 6-2 6-2 |
| Ilya Ivashka | m. | Laslo Djere | 6-3 6-2 |
Kualifikasi babak 2
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Yoshihito Nishioka | m. | Miomir Kecmanovic | 6-3 4-6 6-2 |
| Egor Gerasimov | m. | Radu Albot | 7-6(2) 6-4 |
| Emil Ruusuvuori | m. | Dmitry Popko | 7-6(2) 6-4 |
| Botic Van De Zandschulp | m. | Evgeny Donskoy | 5-7 6-3 6-2 |
Kualifikasi babak 1
| Pemenang | Kalah | Skor | |
|---|---|---|---|
| Yoshihito Nishioka | m. | Roman Safiullin | 7-5 6-2 |
| Miomir Kecmanovic | m. | Evgeny Karlovskiy | 2-6 6-4 6-1 |
| Egor Gerasimov | m. | Damir Dzumhur | 6-1 7-6(6) |
| Radu Albot | m. | Federico Coria | 6-3 6-4 |
| Emil Ruusuvuori | m. | Gilles Simon | 6-0 6-3 |
| Dmitry Popko | m. | Benjamin Bonzi | 4-6 7-6(4) 6-2 |
| Evgeny Donskoy | m. | Mikael Ymer | 6-2 7-5 |
| Botic Van De Zandschulp | m. | Marc Polmans | 6-6 RET |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0