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| 2018 St. Petersburg Ladies' Trophy | ||||
|---|---|---|---|---|
| Date | 29 January – 4 February | |||
| Edition | 9th | |||
| Category | WTA Premier | |||
| Prize money | $776,000 | |||
| Surface | Hard (indoor) | |||
| Location | Saint Petersburg, Russia | |||
| Venue | Sibur Arena | |||
| Champions | ||||
| Singles | ||||
 Petra Kvitová | ||||
| Doubles | ||||
 Timea Bacsinszky /  Vera Zvonareva | ||||
| ||||
The 2018 St. Petersburg Ladies' Trophy was a professional tennis tournament played on indoor hard courts. It was the 9th edition of the tournament and third time as a WTA Premier tournament. It was part of the 2018 WTA Tour and was held between 29 January and 4 February 2018.
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q3 | Q2 | Q1 |
| Singles | 470 | 305 | 185 | 100 | 55 | 1 | 25 | 18 | 13 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 1 | — | — | — | — | — |
| Event | W | F | SF | QF | Round of 16 | Round of 321 | Q3 | Q2 | Q1 |
| Singles | $132,740 | $70,880 | $37,850 | $20,350 | $10,915 | $6,925 | $3,110 | $1,650 | $920 |
| Doubles* | $41,520 | $22,180 | $12,120 | $6,165 | $3,350 | — | — | — | — |
1Qualifiers prize money is also the Round of 32 prize money.
*per team
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 DEN
|
Caroline Wozniacki | 2 | 1 |
 LAT
|
Jeļena Ostapenko | 7 | 2 |
 FRA
|
Caroline Garcia | 8 | 3 |
| FRA
|
Kristina Mladenovic | 11 | 4 |
 GER
|
Julia Görges | 12 | 5 |
| RUS
|
Anastasia Pavlyuchenkova | 18 | 6 |
| RUS
|
Elena Vesnina | 19 | 7 |
| RUS
|
Daria Kasatkina | 25 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Simona Halep → replaced by Andrea Petkovic
Ana Konjuh → replaced by Tatjana Maria
Elise Mertens → replaced by Donna Vekić Anastasija Sevastova → replaced by Kateřina Siniaková Barbora Strýcová → replaced by 
Maria Sakkari
Carla Suárez Navarro → replaced by Mona Barthel| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
 CAN
|
Gabriela Dabrowski |  CHN
|
Xu Yifan | 29 | 1 |
 USA
|
Raquel Atawo | GER
|
Anna-Lena Grönefeld | 55 | 2 |
| USA
|
Nicole Melichar | CZE
|
Květa Peschke | 57 | 3 |
| CRO
|
Darija Jurak | CZE
|
Renata Voráčová | 86 | 4 |
The following pair received a wildcard into the doubles main draw:
Petra Kvitová def. Kristina Mladenovic, 6–1, 6–2 Timea Bacsinszky / Vera Zvonareva def. Alla Kudryavtseva / 
Katarina Srebotnik, 2–6, 6–1, [10–3]|
2019 » | |
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| Grand Slam events |
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| WTA Premier Mandatory tournaments |
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| WTA Premier 5 tournaments |
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| WTA Premier tournaments |
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