# 2020 St. Petersburg Ladies' Trophy – Singles

Kiki Bertens was the defending champion and successfully defended her title, defeating Elena Rybakina in the final, 6–1, 6–3. This would be Bertens' final WTA Tour singles title before her retirement in July 2021.

## Seeds

* Belinda Bencic (quarterfinals)
* Kiki Bertens (champion)
* Petra Kvitová (quarterfinals, withdrew)
* Johanna Konta (second round)
* Markéta Vondroušová (first round)
* Maria Sakkari (semifinals)
* Donna Vekić (second round)
* Elena Rybakina (final)

## 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 |
| 6 | Maria Sakkari | 6 | 5 | 1 | | | | |
| 8 | Elena Rybakina | 3 | 7 | 6 | | | | |
| 8 | Elena Rybakina | 3 | 7 | 6 | 8 | Elena Rybakina | 1 | 3 |
| | | | | | 2 | Kiki Bertens | 6 | 6 |
| | Ekaterina Alexandrova | 1 | 6 | 1 | 2 | Kiki Bertens | 6 | 6 |
| 2 | Kiki Bertens | 6 | 4 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1/WC | B Bencic | 7$^7$ | 6 | | | | | | | | | | |
| | J Brady | 3 | 1 | | WC | S Kuznetsova | 6$^4$ | 4 | | | | | | | | | | |
| WC | S Kuznetsova | 6 | 6 | | | | | | 1/WC | B Bencic | 6 | 4 | 3 | | | | | |
| Q | A Cornet | 6 | 6 | | | | | | 6 | M Sakkari | 2 | 6 | 6 | | | | | |
| | J Ostapenko | 1 | 2 | | Q | A Cornet | 2 | 4 | | | | | | | | | | |
| Q | V Diatchenko | 6 | 4 | 6$^3$ | 6 | M Sakkari | 6 | 6 | | | | | | | | | | |
| 6 | M Sakkari | 3 | 6 | 7$^7$ | | | | | | | | | | 6 | M Sakkari | 6 | 5 | 1 |
| | | | | | | | | | | | | | | 8 | E Rybakina | 3 | 7 | 6 |
| | | | | | 4/WC | J Konta | 3 | 4 | | | | | | | | | | |
| | V Kužmová | 2 | 2 | | Q | O Dodin | 6 | 6 | | | | | | | | | | |
| Q | O Dodin | 6 | 6 | | | | | | Q | O Dodin | 7$^7$ | 5 | 2 | | | | | |
| LL | F Ferro | 7 | 3 | 6 | | | | | 8 | E Rybakina | 6$^5$ | 7 | 6 | | | | | |
| | C Garcia | 5 | 6 | 3 | LL | F Ferro | 3 | 4 | | | | | | | | | | |
| | K Siniaková | 3 | 4 | | 8 | E Rybakina | 6 | 6 | | | | | | | | | | |
| 8 | E Rybakina | 6 | 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 |
| 7 | D Vekić | 6 | 6 | | | | | | | | | | | | | | | |
| Q | K Ahn | 4 | 1 | | 7 | D Vekić | 1 | 5 | | | | | | | | | | |
| WC | D Kasatkina | 4 | 6 | 4 | | E Alexandrova | 6 | 7 | | | | | | | | | | |
| | E Alexandrova | 6 | 3 | 6 | | | | | | | E Alexandrova | w/o | | | | | | |
| | A Van Uytvanck | 6 | 6 | | | | | | | 3 | P Kvitová | | | | | | | |
| | K Mladenovic | 4 | 1 | | | A Van Uytvanck | 6$^1$ | 6 | 2 | | | | | | | | | |
| | | | | | 3 | P Kvitová | 7$^7$ | 1 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | | E Alexandrova | 1 | 6 | 1 |
| 5 | M Vondroušová | 6 | 3 | 4 | | | | | | | | | | 2 | K Bertens | 6 | 4 | 6 |
| | A Tomljanović | 3 | 6 | 6 | | A Tomljanović | 6$^2$ | 3 | | | | | | | | | | |
| Q | L Samsonova | 2 | 4 | | Q | A Potapova | 7$^7$ | 6 | | | | | | | | | | |
| Q | A Potapova | 6 | 6 | | | | | | | Q | A Potapova | 4 | 6$^3$ | | | | | |
| | V Kudermetova | 7$^7$ | 1 | 7 | | | | | | 2 | K Bertens | 6 | 7$^7$ | | | | | |
| | Y Putintseva | 6$^4$ | 6 | 5 | | V Kudermetova | 1 | 2 | | | | | | | | | | |
| | | | | | 2 | K Bertens | 6 | 6 | | | | | | | | | | |

## Qualifying
### Seeds

* Fiona Ferro (qualifying competition, lucky loser)
* Alizé Cornet (qualified)
* Vitalia Diatchenko (qualified)
* Kristie Ahn (qualified)
* Tímea Babos (qualifying competition)
* Anastasia Potapova (qualified)
* Varvara Gracheva (first round)
* Margarita Gasparyan (first round)
* Liudmila Samsonova (qualified)
* Natalia Vikhlyantseva (qualifying competition)
* Pauline Parmentier (qualifying competition)
* Tereza Martincová (qualifying competition)

### Qualifiers

* Océane Dodin
* Alizé Cornet
* Vitalia Diatchenko
* Kristie Ahn
* Liudmila Samsonova
* Anastasia Potapova

### Lucky loser

* Fiona Ferro

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Fiona Ferro | 7 | 6 | | | | |
| | Marina Melnikova | 5 | 4 | | | | |
| | Marina Melnikova | 5 | 4 | 1 | Fiona Ferro | 6$^7$ | 6$^5$ |
| | | | | | Océane Dodin | 7$^9$ | 7$^7$ |
| | Océane Dodin | 6 | 6 | | Océane Dodin | 7$^9$ | 7$^7$ |
| 7 | Varvara Gracheva | 4 | 2 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Alizé Cornet | 6 | 6 | | | | |
| | Valentina Ivakhnenko | 2 | 1 | | | | |
| | Valentina Ivakhnenko | 2 | 1 | 2 | Alizé Cornet | 6 | 6 |
| | | | | | Vera Zvonareva | 3 | 4 |
| | Vera Zvonareva | 6 | 6 | | Vera Zvonareva | 3 | 4 |
| 8 | Margarita Gasparyan | 2 | 2 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Vitalia Diatchenko | 6$^8$ | 7 | 6 | | | | |
| WC | Daria Mishina | 7$^{10}$ | 5 | 3 | | | | |
| WC | Daria Mishina | 7$^{10}$ | 5 | 3 | 3 | Vitalia Diatchenko | 7$^7$ | 6 |
| | | | | | 10 | Natalia Vikhlyantseva | 6$^3$ | 4 |
| | Anastasiya Komardina | 3 | 3 | | 10 | Natalia Vikhlyantseva | 6$^3$ | 4 |
| 10 | Natalia Vikhlyantseva | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Kristie Ahn | 6 | 4 | 6 | | | | |
| | Valeriya Strakhova | 2 | 6 | 3 | | | | |
| | Valeriya Strakhova | 2 | 6 | 3 | 4 | Kristie Ahn | 7$^7$ | 6 |
| | | | | | 12 | Tereza Martincová | 6$^1$ | 4 |
| WC | Polina Kudermetova | 1 | 1 | | 12 | Tereza Martincová | 6$^1$ | 4 |
| 12 | Tereza Martincová | 6 | 6 | | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Tímea Babos | 3 | 6 | 7$^7$ | | | | | |
| | Kamilla Rakhimova | 6 | 4 | 6$^5$ | | | | | |
| | Kamilla Rakhimova | 6 | 4 | 6$^5$ | 5 | Tímea Babos | 7 | 3 | 2 |
| | | | | | 9 | Liudmila Samsonova | 5 | 6 | 6 |
| WC | Ekaterina Shalimova | 2 | 1 | | 9 | Liudmila Samsonova | 5 | 6 | 6 |
| 9 | Liudmila Samsonova | 6 | 6 | | | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Anastasia Potapova | 6 | 6 | | | | | |
| | Martina Di Giuseppe | 1 | 4 | | | | | |
| | Martina Di Giuseppe | 1 | 4 | | 6 | Anastasia Potapova | 6 | 6 |
| | | | | | 11 | Pauline Parmentier | 3 | 1 |
| | Cristina Bucșa | 7 | 2 | 4 | 11 | Pauline Parmentier | 3 | 1 |
| 11 | Pauline Parmentier | 5 | 6 | 6 | | | | |