title: 2018 St. Petersburg Ladies' Trophy – Singles
text: # 2018 St. Petersburg Ladies' Trophy – Singles
  
  Kristina Mladenovic was the defending champion, but lost in the final to unseeded Petra Kvitová, 1–6, 2–6. As a result, Kvitová became the first left-handed player to win a singles title in Russia. She was also the first wildcard to win the event.
  
  ## Seeds
  
  The top four seeds received a bye into the second round.
  
  * Caroline Wozniacki (quarterfinals)
  * Jeļena Ostapenko (quarterfinals)
  * Caroline Garcia (second round)
  * Kristina Mladenovic (final)
  * Julia Görges (semifinals)
  * Anastasia Pavlyuchenkova (first round)
  * Elena Vesnina (first round)
  * Daria Kasatkina (semifinals)
  
  ## 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 |
  | - | - | - | - | - | - | - | - | - |
  | 8 | Daria Kasatkina | 6 | 3 | 2 | | | | |
  | 4 | Kristina Mladenovic | 3 | 6 | 6 | | | | |
  | 4 | Kristina Mladenovic | 3 | 6 | 6 | 4 | Kristina Mladenovic | 1 | 2 |
  | | | | | | WC | Petra Kvitová | 6 | 6 |
  | 5 | Julia Görges | 5 | 6 | 2 | WC | Petra Kvitová | 6 | 6 |
  | WC | Petra Kvitová | 7 | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | | | | | | 1 | C Wozniacki | 6 | 6 | | | | | | | | | |
  | WC | A Potapova | 6 | 6 | | WC | A Potapova | 0 | 1 | | | | | | | | | |
  | | T Maria | 2 | 4 | | | | | | 1 | C Wozniacki | $6^2$ | 3 | | | | | |
  | | M Barthel | 3 | 5 | | | | | | 8 | D Kasatkina | $7^7$ | 6 | | | | | |
  | | A Cornet | 6 | 7 | | | A Cornet | 2 | 1 | | | | | | | | | |
  | Q | V Kužmová | 6 | 4 | 1 | 8 | D Kasatkina | 6 | 6 | | | | | | | | | |
  | 8 | D Kasatkina | 1 | 6 | 6 | | | | | | | | | 8 | D Kasatkina | 6 | 3 | 2 |
  | | | | | | | | | | | | | | 4 | K Mladenovic | 3 | 6 | 6 |
  | | | | | | 4 | K Mladenovic | 6 | 6 | | | | | | | | | |
  | | S Cîrstea | 5 | 2 | | | D Cibulková | 4 | 4 | | | | | | | | | |
  | | D Cibulková | 7 | 6 | | | | | | 4 | K Mladenovic | 6 | 6 | | | | | |
  | | D Vekić | 3 | 6 | 4 | | | | | | K Siniaková | 4 | 3 | | | | | |
  | | K Siniaková | 6 | 2 | 6 | | K Siniaková | $7^9$ | 7 | | | | | | | | | |
  | | E Makarova | 6 | 6 | | | E Makarova | $6^7$ | 5 | | | | | | | | | |
  | 6 | A Pavlyuchenkova | 4 | 4 | | | | | | | | | | | | | | |
  
  ### Bottom half
  
  | 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 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 5 | J Görges | 6 | $7^7$ | | | | | | | | | | | | | | |
  | | M Sakkari | 2 | $6^5$ | 5 | J Görges | 7 | 6 | | | | | | | | | | |
  | Q | R Vinci | 6 | 6 | Q | R Vinci | 5 | 0 | | | | | | | | | | |
  | Q | T Martincová | 2 | 2 | | | | | | 5 | J Görges | 6 | 6 | | | | | |
  | | T Bacsinszky | 4 | 3 | | | | | | Q | E Rybakina | 3 | 3 | | | | | |
  | Q | E Rybakina | 6 | 6 | Q | E Rybakina | 4 | $7^8$ | $7^7$ | | | | | | | | | |
  | | | | | 3 | C Garcia | 6 | $6^6$ | $6^5$ | | | | | | | | | |
  | | | | | | | | | | | | | | 5 | J Görges | 5 | 6 | 2 |
  | 7/WC | E Vesnina | 2 | 0 | | | | | | | | | | WC | P Kvitová | 7 | 4 | 6 |
  | WC | P Kvitová | 6 | 6 | WC | P Kvitová | 6 | 1 | 6 | | | | | | | | | |
  | | I-C Begu | $7^7$ | 6 | | I-C Begu | 3 | 6 | 1 | | | | | | | | | |
  | LL | A Petkovic | $6^5$ | 1 | | | | | | WC | P Kvitová | 6 | 6 | | | | | |
  | WC | V Zvonareva | 6 | 0 | | | | | | 2 | J Ostapenko | 0 | 2 | | | | | |
  | | K Bertens | 4 | $0^r$ | WC | V Zvonareva | $6^6$ | 3 | | | | | | | | | | |
  | | | | | 2 | J Ostapenko | $7^8$ | 6 | | | | | | | | | | |
  
  ## Qualifying
  
  ### Seeds
  
  * Kristýna Plíšková (second round)
  * Natalia Vikhlyantseva (qualifying competition)
  * Heather Watson (first round)
  * Kirsten Flipkens (first round)
  * Océane Dodin (second round)
  * Lara Arruabarrena (first round)
  * Ekaterina Alexandrova (first round)
  * Andrea Petkovic (qualifying competition, lucky loser)
  
  ### Qualifiers
  
  * Tereza Martincová
  * Viktória Kužmová
  * Roberta Vinci
  * Elena Rybakina
  
  ### Lucky loser
  
  * Andrea Petkovic
  
  ### Qualifying draw
  
  **First qualifier**
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 1 | Kristýna Plíšková | 6 | 6 | | | | | | | | | | |
  | | Başak Eraydın | 0 | 2 | | | | | | | | | | |
  | | Başak Eraydın | 0 | 2 | | 1 | Kristýna Plíšková | 6 | 4 | 4 | | | | |
  | | | | | | | Tereza Martincová | 3 | 6 | 6 | | | | |
  | | Tereza Martincová | 6 | 6 | | | Tereza Martincová | 3 | 6 | 6 | | | | |
  | WC | Anastasia Frolova | 3 | 1 | | | | | | | | | | |
  | WC | Anastasia Frolova | 3 | 1 | | | | | | | Tereza Martincová | 6 | 5 | 6 |
  | | | | | | | | | | | Vera Lapko | 4 | 7 | 1 |
  | | Viktoriya Tomova | 2 | 6 | 1 | | | | | | | | | | Vera Lapko | 4 | 7 | 1 |
  | | Vera Lapko | 6 | 4 | 6 | | | | | | | | | |
  | | Vera Lapko | 6 | 4 | 6 | | Vera Lapko | 7 | 6 | | | | | |
  | | | | | | 5 | Océane Dodin | 5 | 4 | | | | | |
  | PR | Bojana Jovanovski Petrović | 4 | 3 | | 5 | Océane Dodin | 5 | 4 | | | | | |
  | 5 | Océane Dodin | 6 | 6 | | | | | | | | | | |
  
  **Second qualifier**
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 2 | Natalia Vikhlyantseva | 6 | 6 | | | | | | | | | | |
  | | Valentyna Ivakhnenko | 2 | 1 | | | | | | | | | | |
  | | Valentyna Ivakhnenko | 2 | 1 | | 2 | Natalia Vikhlyantseva | 6 | 6 | | | | | |
  | | | | | | | Jana Čepelová | 3 | 2 | | | | | |
  | | Jana Čepelová | $7^{10}$ | 2 | 6 | | Jana Čepelová | 3 | 2 | | | | | |
  | | Sara Errani | $6^8$ | 6 | 3 | | | | | | | | | |
  | | Sara Errani | $6^8$ | 6 | 3 | | | | | | 2 | Natalia Vikhlyantseva | 2 | 5 |
  | | | | | | | | | | | | Viktória Kužmová | 6 | 7 |
  | WC | Amina Anshba | 4 | 2 | | | | | | | | | | | Viktória Kužmová | 6 | 7 |
  | | Viktória Kužmová | 6 | 6 | | | | | | | | | | |
  | | Viktória Kužmová | 6 | 6 | | | Viktória Kužmová | 6 | 3 | 6 | | | | |
  | | | | | | | Dayana Yastremska | 3 | 6 | 4 | | | | |
  | | Dayana Yastremska | 4 | 6 | 6 | | Dayana Yastremska | 3 | 6 | 4 | | | | |
  | 7 | Ekaterina Alexandrova | 6 | 3 | 2 | | | | | | | | | |
  
  **Third qualifier**
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 3 | Heather Watson | 3 | 4 | | | | | | | | | | |
  | | Roberta Vinci | 6 | 6 | | | | | | | | | | |
  | | Roberta Vinci | 6 | 6 | | | Roberta Vinci | 6 | 6 | | | | | |
  | | | | | | | Danka Kovinić | 1 | 2 | | | | | |
  | | Jasmine Paolini | 4 | 6 | 2 | | Danka Kovinić | 1 | 2 | | | | | |
  | | Danka Kovinić | 6 | 3 | 6 | | | | | | | | | |
  | | Danka Kovinić | 6 | 3 | 6 | | | | | | Roberta Vinci | 6 | 4 | 6 |
  | | | | | | | | | | 8 | Andrea Petkovic | 1 | 6 | 3 |
  | | Polina Monova | 6 | 6 | | | | | | | | | | | 8 | Andrea Petkovic | 1 | 6 | 3 |
  | WC | Valeriya Pogrebnyak | 4 | 0 | | | | | | | | | | |
  | WC | Valeriya Pogrebnyak | 4 | 0 | | | Polina Monova | 3 | 2 | | | | | |
  | | | | | | 8 | Andrea Petkovic | 6 | 6 | | | | | |
  | | Anna Kalinskaya | 3 | 7 | 2 | 8 | Andrea Petkovic | 6 | 6 | | | | | |
  | 8 | Andrea Petkovic | 6 | 5 | 6 | | | | | | | | | |
  
  **Fourth qualifier**
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 4 | Kirsten Flipkens | 2 | 0 | | | | | | | | | | |
  | | Deborah Chiesa | 6 | 6 | | | | | | | | | | |
  | | Deborah Chiesa | 6 | 6 | | | Deborah Chiesa | 6 | 2 | 6 | | | | |
  | | | | | | | Jana Fett | 2 | 6 | 4 | | | | |
  | | Sesil Karatantcheva | 6 | 3 | 3 | | Jana Fett | 2 | 6 | 4 | | | | |
  | | Jana Fett | 3 | 6 | 6 | | | | | | | | | |
  | | Jana Fett | 3 | 6 | 6 | | | | | | | Deborah Chiesa | 1 | 3 |
  | | | | | | | | | | | WC | Elena Rybakina | 6 | 6 |
  | WC | Elena Rybakina | 3 | 6 | 6 | | | | | | | | | | WC | Elena Rybakina | 6 | 6 |
  | | Veronika Kudermetova | 6 | 3 | 2 | | | | | | | | | |
  | | Veronika Kudermetova | 6 | 3 | 2 | WC | Elena Rybakina | 6 | 6 | | | | | |
  | | | | | | | Sabina Sharipova | 4 | 4 | | | | | |
  | | Sabina Sharipova | 3 | $7^7$ | 7 | | Sabina Sharipova | 4 | 4 | | | | | |
  | 6 | Lara Arruabarrena | 6 | $6^4$ | 5 | | | | | | | | | |
  