# 2021 St. Petersburg Ladies' Trophy

The 2021 St. Petersburg Ladies' Trophy is a professional tennis tournament played on indoor hard courts. It is the 12th edition of the tournament and a WTA 500 tournament on the 2021 WTA Tour. The tournament is held between 15 and 21 March 2021.

## Champions
### Singles

* Daria Kasatkina def. Margarita Gasparyan, 6–3, 2–1, ret.

### Doubles

* Nadiia Kichenok / Raluca Olaru def. Kaitlyn Christian / Sabrina Santamaria, 2–6, 6–3, [10–8].

## Point distribution

| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q2 | Q1 |
| Singles | 470 | 305 | 185 | 100 | 55 | 1 | 25 | 13 | 1 |
| Doubles | 470 | 305 | 185 | 100 | 1 | — | — | — | — |

## Prize money

| Event | W | F | SF | QF | Round of 16 | Round of 32$^1$ | Q2 | Q1 |
| Singles | $68,570 | $51,000 | $32,400 | $15,500 | $8,200 | $6,650 | $5,000 | $2,565 |
| Doubles* | $25,230 | $17,750 | $10,000 | $5,500 | $3,500 | — | — | — |
$_{1QualifiersprizemoneyisalsotheRoundof32prizemoney.}$ $_{*perteam}$

## Singles main draw entrants
### Seeds

| Country | Player | Rank$^1$ | Seed |
| RUS | Ekaterina Alexandrova | 33 | 1 |
| RUS | Veronika Kudermetova | 34 | 2 |
| FRA | Fiona Ferro | 39 | 3 |
| RUS | Svetlana Kuznetsova | 41 | 4 |
| RUS | Anastasia Pavlyuchenkova | 43 | 5 |
| LAT | Jeļena Ostapenko | 51 | 6 |
| FRA | Kristina Mladenovic | 53 | 7 |
| RUS | Daria Kasatkina | 58 | 8 |
* $^1$ Rankings as of March 8, 2021.

### Other entrants

The following players received wildcards into the singles main draw:
* Margarita Gasparyan
* Daria Mishina
* Vera Zvonareva
The following player received entry into the singles main draw using a protected ranking:
* Vera Lapko
The following players received entry from the qualifying draw:
* Jaqueline Cristian
* Anastasia Gasanova
* Kamilla Rakhimova
* Arina Rodionova
* Clara Tauson
* Wang Xinyu
The following player received entry as a lucky loser:
* Çağla Büyükakçay

### Withdrawals
#### Before the tournament

* Belinda Bencic → replaced by Kirsten Flipkens
* Sorana Cîrstea → replaced by Aliaksandra Sasnovich
* Elise Mertens → replaced by Çağla Büyükakçay
* Yulia Putintseva → replaced by Daria Kasatkina
* Alison Riske → replaced by Katarina Zavatska
* Anastasija Sevastova → replaced by Vera Lapko
* Jil Teichmann → replaced by Viktoriya Tomova
* Patricia Maria Țig → replaced by Ana Bogdan
* Donna Vekić → replaced by Paula Badosa

### Retirements

* Vera Lapko (cramping)
* Margarita Gasparyan (lower-back injury)

## Doubles main draw entrants
### Seeds

| Country | Player | Country | Player | Rank$^1$ | Seed |
| UKR | Nadiia Kichenok | ROU | Raluca Olaru | 98 | 1 |
| USA | Kaitlyn Christian | USA | Sabrina Santamaria | 130 | 2 |
| JPN | Makoto Ninomiya | CZE | Renata Voráčová | 132 | 3 |
| BLR | Lidziya Marozava | BLR | Aliaksandra Sasnovich | 134 | 4 |
* $^1$ Rankings as of March 8, 2021.

### Other entrants

The following pair received a wildcard into the doubles main draw:
* Daria Mishina / Ekaterina Shalimova
* Elena Vesnina / Vera Zvonareva
The following pairs received entry using protected rankings:
* Oksana Kalashnikova / Alla Kudryavtseva
* Aleksandra Krunić / Alexandra Panova

### Withdrawals
#### Before the tournament

* Georgina García Pérez / Bibiane Schoofs → replaced by Ekaterina Alexandrova / Yana Sizikova
* Lyudmyla Kichenok / Jeļena Ostapenko → replaced by Jeļena Ostapenko / Valeria Savinykh
* Veronika Kudermetova / Elise Mertens → replaced by Laura Ioana Paar / Julia Wachaczyk
* Lidziya Marozava / Andreea Mitu → replaced by Lidziya Marozava / Aliaksandra Sasnovich
* Vera Lapko / Cornelia Lister → replaced by Çağla Büyükakçay / Magdalena Fręch