# 2020 St. Petersburg Open – Singles

The tournament was played on a hard surface. Due to the ongoing COVID-19 pandemic and many ATP tournaments having been cancelled, this year's event was upgraded to ATP 500 level.
Daniil Medvedev was the defending champion, but lost in the second round to Reilly Opelka.
Andrey Rublev won the title, defeating last year finalist Borna Ćorić in the final, 7–6$^{(7–5)}$, 6–4.

## Seeds

* Daniil Medvedev (second round)
* Denis Shapovalov (semifinals)
* Andrey Rublev (champion)
* Karen Khachanov (quarterfinals)
* Stan Wawrinka (quarterfinals)
* Milos Raonic (semifinals)
* Borna Ćorić (final)
* Taylor Fritz (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 7 | Borna Ćorić | 1 | 6 | 6 | | | | |
| 6 | Milos Raonic | 6 | 1 | 4 | | | | |
| 6 | Milos Raonic | 6 | 1 | 4 | 7 | Borna Ćorić | 6$^5$ | 4 |
| | | | | | 3 | Andrey Rublev | 7$^7$ | 6 |
| 3 | Andrey Rublev | 4 | 6 | 6 | 3 | Andrey Rublev | 7$^7$ | 6 |
| 2 | Denis Shapovalov | 6 | 3 | 4 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | D Medvedev | 3 | 6 | 6 | | | | | | | | | | | | | | |
| | R Gasquet | 6 | 3 | 0 | 1 | D Medvedev | 6 | 5 | 4 | | | | | | | | | |
| Q | N Serdarušić | 6 | 6$^5$ | 2 | | R Opelka | 2 | 7 | 6 | | | | | | | | | |
| | R Opelka | 3 | 7$^7$ | 6 | | | | | | | R Opelka | 6$^3$ | 3 | | | | | |
| WC | R Safiullin | 6 | 6 | | | | | | | 7 | B Ćorić | 7$^7$ | 6 | | | | | |
| LL | E Gómez | 4 | 2 | | WC | R Safiullin | 3 | 5 | | | | | | | | | | |
| | F López | 3 | 6$^2$ | | 7 | B Ćorić | 6 | 7 | | | | | | | | | | |
| 7 | B Ćorić | 6 | 7$^7$ | | | | | | | | | | | 7 | B Ćorić | 1 | 6 | 6 |
| 4 | K Khachanov | 6 | 6 | | | | | | | | | | | 6 | M Raonic | 6 | 1 | 4 |
| | J Duckworth | 4 | 4 | | 4 | K Khachanov | 4 | 7 | 6 | | | | | | | | | |
| | T Sandgren | 5 | 6 | 5 | WC | A Karatsev | 6 | 5 | 3 | | | | | | | | | |
| WC | A Karatsev | 7 | 3 | 7 | | | | | | 4 | K Khachanov | 1 | 6$^1$ | | | | | |
| | A Bublik | 2 | 7$^7$ | 6 | | | | | | 6 | M Raonic | 6 | 7$^7$ | | | | | |
| PR | M McDonald | 6 | 6$^2$ | 4 | | A Bublik | 3 | 2 | | | | | | | | | | |
| Q | JJ Wolf | 6$^5$ | 1 | | 6 | M Raonic | 6 | 6 | | | | | | | | | | |
| 6 | M Raonic | 7$^7$ | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | T Fritz | 4 | 6 | 3 | | | | | | | | | | | | | | |
| | C Norrie | 6 | 4 | 6 | | C Norrie | 7 | 6$^5$ | 6 | | | | | | | | | |
| | M Kukushkin | 3 | 6$^7$ | | | M Kecmanović | 5 | 7$^7$ | 3 | | | | | | | | | |
| | M Kecmanović | 6 | 7$^9$ | | | | | | | | C Norrie | 2 | 1 | | | | | |
| Q | P Kotov | 6 | 2 | 3 | | | | | | 3 | A Rublev | 6 | 6 | | | | | |
| | U Humbert | 4 | 6 | 6 | | U Humbert | 6 | 4 | 5 | | | | | | | | | |
| | V Pospisil | 2 | 4 | | 3 | A Rublev | 4 | 6 | 7 | | | | | | | | | |
| 3 | A Rublev | 6 | 6 | | | | | | | | | | | 3 | A Rublev | 4 | 6 | 6 |
| 5 | S Wawrinka | 3 | 7$^7$ | 7 | | | | | | | | | | 2 | D Shapovalov | 6 | 3 | 4 |
| | D Evans | 6 | 6$^3$ | 5 | 5 | S Wawrinka | 6 | 3 | 6 | | | | | | | | | |
| WC | E Donskoy | 6 | 7$^7$ | | WC | E Donskoy | 1 | 6 | 3 | | | | | | | | | |
| | E Gerasimov | 4 | 6$^4$ | | | | | | | 5 | S Wawrinka | 4 | 5 | | | | | |
| | A Mannarino | 3 | 6$^6$ | | | | | | | 2 | D Shapovalov | 6 | 7 | | | | | |
| Q | I Ivashka | 6 | 7$^8$ | | Q | I Ivashka | 1 | 4 | | | | | | | | | | |
| LL | V Troicki | 2 | 3 | | 2 | D Shapovalov | 6 | 6 | | | | | | | | | | |
| 2 | D Shapovalov | 6 | 6 | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* J. J. Wolf (qualified)
* Ilya Ivashka (qualified)
* Nikola Milojević (qualifying competition)
* Emilio Gómez (qualifying competition, lucky loser)
* Ernests Gulbis (first round)
* Jurij Rodionov (first round)
* Viktor Troicki (qualifying competition, lucky loser)
* Cem İlkel (first round)

### Qualifiers

* J. J. Wolf
* Ilya Ivashka
* Nino Serdarušić
* Pavel Kotov

### Lucky losers

* Emilio Gómez
* Viktor Troicki

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | J. J. Wolf | 4 | 6 | 6 | | | | | |
| | Alexey Vatutin | 6 | 1 | 3 | | | | | |
| | Alexey Vatutin | 6 | 1 | 3 | 1 | J. J. Wolf | 3 | 7 | 6 |
| | | | | | WC | Alen Avidzba | 6 | 5 | 1 |
| WC | Alen Avidzba | 4 | 6 | 7$^7$ | WC | Alen Avidzba | 6 | 5 | 1 |
| 5 | Ernests Gulbis | 6 | 3 | 6$^2$ | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Ilya Ivashka | 7 | 6 | | | | | |
| | Max Purcell | 5 | 4 | | | | | |
| | Max Purcell | 5 | 4 | | 2 | Ilya Ivashka | 7 | 6 |
| | | | | | 7 | Viktor Troicki | 5 | 1 |
| PR | Andrey Kuznetsov | 3 | 7$^7$ | 4 | 7 | Viktor Troicki | 5 | 1 |
| 7 | Viktor Troicki | 6 | 6$^5$ | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Nikola Milojević | 6 | 6 | | | | | | |
| | Evgeny Karlovskiy | 4 | 0 | | | | | | |
| | Evgeny Karlovskiy | 4 | 0 | | 3 | Nikola Milojević | 7$^7$ | 2 | 2 |
| | | | | | WC | Nino Serdarušić | 6$^1$ | 6 | 6 |
| WC | Nino Serdarušić | 7$^7$ | 3 | 6 | WC | Nino Serdarušić | 6$^1$ | 6 | 6 |
| 8 | Cem İlkel | 6$^5$ | 6 | 4 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Emilio Gómez | 7$^9$ | 1 | 6 | | | | | |
| | Teymuraz Gabashvili | 6$^7$ | 6 | 4 | | | | | |
| | Teymuraz Gabashvili | 6$^7$ | 6 | 4 | 4 | Emilio Gómez | 7 | 6$^4$ | 2 |
| | | | | | WC | Pavel Kotov | 5 | 7$^7$ | 6 |
| WC | Pavel Kotov | 6 | 3 | 7 | WC | Pavel Kotov | 5 | 7$^7$ | 6 |
| 6 | Jurij Rodionov | 4 | 6 | 5 | | | | | |