Dominic Thiem was the defending champion, but chose to compete in the Laver Cup instead. Daniil Medvedev won the title, defeating Borna Ćorić in the final, 6–3, 6–1. Medvedev became the first active player outside the

Big Four Big Four or Big 4 may refer to: Groups of companies * Big Four accounting firms: Deloitte, Ernst & Young, KPMG, PwC * Big Four (airlines) in the U.S. in the 20th century: American, Eastern, TWA, United * Big Four (banking), several groupings ...

to reach the final in five consecutive tournaments.

Seeds

The top four

seeds A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm pl ...

receive a bye into the second round.

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky losers

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

External links

Main draw

Qualifying draw
{{DEFAULTSORT:St. Petersburg Open - Singles, 2019

2019 Singles Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Musi ...

2019 ATP Tour