Kristina Mladenovic Kristina "Kiki" Mladenovic (born 14 May 1993) is a French professional tennis player and a former List of WTA number 1 ranked doubles tennis players, world No. 1 in doubles. Her best singles ranking is world No. 10. She is a nine-time Grand Slam ...

was the defending champion, but lost in the final to unseeded

Petra Kvitová Petra Kvitová (; born 8 March 1990) is a Czech professional tennis player. Known for her powerful left-handed groundstrokes and variety, Kvitová has won 31 career singles titles, including two Grand Slam (tennis)#Tournaments, major titles ...

, 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.

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky loser

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

Main Draw

Qualifying Draw
{{DEFAULTSORT:2018 St. Petersburg Ladies' Trophy - Singles St. Petersburg Ladies' Trophy - Singles St. Petersburg Ladies' Trophy