title: 2018 St. Petersburg Open
text: # 2018 St. Petersburg Open
  
  The 2018 St. Petersburg Open was a tennis tournament played on indoor hard courts. It was the 23rd edition of the St. Petersburg Open, and part of the ATP World Tour 250 Series of the 2018 ATP World Tour. It took place at the Sibur Arena in Saint Petersburg, Russia, from September 17 through 23, 2018.
  
  ## Singles main-draw entrants
  
  ### Seeds
  
  | Country | Player | $Rank^1$ | Seed |
  | - | - | - | - |
  | AUT | Dominic Thiem | 8 | 1 |
  | ITA | Fabio Fognini | 13 | 2 |
  | ITA | Marco Cecchinato | 22 | 3 |
  | RUS | Karen Khachanov | 25 | 4 |
  | ESP | Roberto Bautista Agut | 26 | 5 |
  | BIH | Damir Džumhur | 28 | 6 |
  | CAN | Denis Shapovalov | 34 | 7 |
  | RUS | Daniil Medvedev | 35 | 8 |
  
  * $^1$ Rankings are as of September 10, 2018
  
  ### Other entrants
  
  The following players received wildcards into the singles main draw:
  
  * Roberto Bautista Agut
  * Stan Wawrinka
  * Mikhail Youzhny
  
  The following players received entry from the qualifying draw:
  
  * Ilya Ivashka
  * Adrián Menéndez Maceiras
  * Lucas Miedler
  * Luca Vanni
  
  The following player received entry as a lucky loser:
  
  * Ruben Bemelmans
  
  ### Withdrawals
  
  **Before the tournament**
  
  * Marcos Baghdatis → replaced by Ruben Bemelmans
  * Jozef Kovalík → replaced by Marcos Baghdatis
  * Leonardo Mayer → replaced by Evgeny Donskoy
  
  ## Doubles main-draw entrants
  
  ### Seeds
  
  | Country | Player | Country | Player | $Rank^1$ | Seed |
  | - | - | - | - | - | - |
  | GBR | Dominic Inglot | CRO | Franko Škugor | 62 | 1 |
  | CHI | Julio Peralta | ARG | Horacio Zeballos | 65 | 2 |
  | CZE | Roman Jebavý | NED | Matwé Middelkoop | 80 | 3 |
  | SWE | Robert Lindstedt | USA | Rajeev Ram | 98 | 4 |
  
  * Rankings are as of September 10, 2018
  
  ### Other entrants
  
  The following pairs received wildcards into the doubles main draw:
  
  * Mikhail Elgin / Denis Istomin
  * Teymuraz Gabashvili / Evgeny Karlovskiy
  
  ### Withdrawals
  
  **During the tournament**
  
  * Denis Istomin
  
  ## Champions
  
  ### Singles
  
  * Dominic Thiem def. Martin Kližan, 6–3, 6–1
  
  ### Doubles
  
  * Matteo Berrettini / Fabio Fognini def. Roman Jebavý / Matwé Middelkoop, $7–6^{(8–6)},$ $7–6^{(7–4)}$
  