2019 St. Petersburg Open

The 2019 St. Petersburg Open was a tennis tournament played on indoor hard courts. It was the 24th edition of the St. Petersburg Open, and part of the ATP Tour 250 Series of the 2019 ATP Tour. It took place at the Sibur Arena in Saint Petersburg, Russia, from September 16 through 22, 2019.

Seeds

 * 1 Rankings are as of September 9, 2019

Other entrants
The following players received wildcards into the singles main draw:
 * 🇷🇺 Evgeny Donskoy
 * 🇮🇱 Dudi Sela
 * 🇮🇹 Jannik Sinner

The following players received entry using a protected ranking into the main draw:
 * 🇸🇰 Jozef Kovalík
 * 🇷🇸 Janko Tipsarević

The following players received entry from the qualifying draw:
 * 🇧🇾 Egor Gerasimov
 * 🇧🇾 Ilya Ivashka
 * 🇨🇿 Lukáš Rosol
 * 🇷🇺 Alexey Vatutin

The following players received entry as lucky losers:
 * 🇧🇦 Damir Džumhur
 * 🇮🇹 Matteo Viola

Withdrawals

 * Before the tournament
 * 🇨🇿 Tomáš Berdych → replaced by 🇧🇦 Damir Džumhur
 * 🇷🇸 Laslo Đere → replaced by 🇮🇹 Matteo Viola
 * 🇷🇸 Miomir Kecmanović → replaced by 🇸🇰 Jozef Kovalík
 * 🇫🇷 Corentin Moutet → replaced by 🇷🇸 Janko Tipsarević
 * Stan Wawrinka → replaced by 🇮🇹 Salvatore Caruso

Retirements

 * 🇭🇺 Márton Fucsovics
 * 🇷🇸 Janko Tipsarević

Seeds

 * Rankings are as of September 9, 2019

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇷🇺 Evgeny Donskoy / 🇷🇺 Konstantin Kravchuk
 * 🇷🇺 Evgeny Karlovskiy / 🇷🇺 Andrey Rublev

Singles

 * 🇷🇺 Daniil Medvedev def. Borna Ćorić, 6–3, 6–1

Doubles

 * 🇮🇳 Divij Sharan / 🇸🇰 Igor Zelenay def. 🇮🇹 Matteo Berrettini / 🇮🇹 Simone Bolelli, 6–3, 3–6, [10–8]