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| 2016 St. Petersburg Open | |
|---|---|
| Date | 19–25 September |
| Edition | 21st |
| Category | ATP World Tour 250 Series |
| Surface | Hard / indoor |
| Location | St. Petersburg, Russia |
| Venue | Sibur Arena |
| Champions | |
| Singles | |
 Alexander Zverev | |
| Doubles | |
 Dominic Inglot / Henri Kontinen | |
The2016 St. Petersburg Open was atennis tournament played on indoorhard courts. It was the 21st edition of theSt. Petersburg Open, and part of theATP World Tour 250 Series of the2016 ATP World Tour. It took place at theSibur Arena inSaint Petersburg, Russia, from 19 September through 25 September 2016. Fifth-seededAlexander Zverev won the singles title.
Alexander Zverev defeated
Stan Wawrinka, 6–2, 3–6, 7–5[1]Dominic Inglot /Henri Kontinen defeatedAndre Begemann /
Leander Paes, 4–6, 6–3, [12–10]| Country | Player | Rank1 | Seed |
|---|---|---|---|
| SUI | Stan Wawrinka | 3 | 1 |
 CAN | Milos Raonic | 6 | 2 |
 CZE | Tomáš Berdych | 9 | 3 |
 ESP | Roberto Bautista Agut | 16 | 4 |
| GER | Alexander Zverev | 27 | 5 |
| ESP | Albert Ramos Viñolas | 32 | 6 |
 SRB | Viktor Troicki | 33 | 7 |
 POR | João Sousa | 34 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry using a protected ranking:
The following players received entry from the qualifying draw:
Marcos Baghdatis →replaced by
Evgeny DonskoyPablo Carreño Busta →replaced byLukáš Rosol
Ernests Gulbis →replaced byDušan LajovićJiří Veselý →replaced by
Ričardas Berankis| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| GBR | Dominic Inglot | FIN | Henri Kontinen | 65 | 1 |
 POL | Marcin Matkowski | SRB | Nenad Zimonjić | 86 | 2 |
 NED | Wesley Koolhof | NED | Matwé Middelkoop | 114 | 3 |
 ARG | Andrés Molteni |  CHI | Hans Podlipnik Castillo | 115 | 4 |
The following pairs received wildcards into the doubles main draw:
