# 2012 St. Petersburg Open – Singles

Marin Čilić was the defending champion but chose not to compete. Martin Kližan won his first ATP World Tour title by defeating Fabio Fognini in the final, 6–2, 6–3.

## Seeds

* Mikhail Youzhny (semifinals)
* Denis Istomin (first round)
* Martin Kližan (champion)
* Fabio Fognini (final)
* Lukáš Lacko (first round)
* Lu Yen-hsun (first round)
* Guillermo García-López (quarterfinals)
* Jürgen Zopp (second round, retired due to back injury)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Mikhail Youzhny | 7$^{13}$ | 4 | 6$^3$ | | | | |
| 3 | Martin Kližan | 6$^{11}$ | 6 | 7$^7$ | | | | |
| 3 | Martin Kližan | 6$^{11}$ | 6 | 7$^7$ | 3 | Martin Kližan | 6 | 6 |
| | | | | | 4 | Fabio Fognini | 2 | 3 |
| 4 | Fabio Fognini | 6 | 6 | | 4 | Fabio Fognini | 2 | 3 |
| | Daniel Gimeno-Traver | 3 | 4 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Youzhny | 7$^7$ | 6 | | | | | | | | | | | | | | | |
| | V Pospisil | 6$^4$ | 1 | | 1 | M Youzhny | 6 | 6 | | | | | | | | | | |
| | M Bachinger | 4 | 4 | | | R Ram | 1 | 4 | | | | | | | | | | |
| | R Ram | 6 | 6 | | | | | | 1 | M Youzhny | 6 | 0 | 6 | | | | | |
| Q | S Betov | 6 | 2 | 2 | | | | | 7 | G García-López | 4 | 6 | 3 | | | | | |
| | P Lorenzi | 1 | 6 | 6 | | P Lorenzi | 1 | 1$^r$ | | | | | | | | | | |
| WC | E Donskoy | 6 | 4 | 3 | 7 | G García-López | 6 | 3 | | | | | | | | | | |
| 7 | G García-López | 2 | 6 | 6 | | | | | | | | | | 1 | M Youzhny | 7$^{13}$ | 4 | 6$^3$ |
| 3 | M Kližan | 6 | 6 | | | | | | | | | | | 3 | M Kližan | 6$^{11}$ | 6 | 7$^7$ |
| WC | M Elgin | 4 | 3 | | 3 | M Kližan | 6 | 6 | | | | | | | | | | |
| | S Bolelli | 7$^7$ | 7 | | | S Bolelli | 3 | 3 | | | | | | | | | | |
| | H Zeballos | 6$^3$ | 5 | | | | | | 3 | M Kližan | 6 | 6 | | | | | | |
| | P Petzschner | 2 | 3$^r$ | | | | | | | R Berankis | 3 | 2 | | | | | | |
| | R Berankis | 6 | 3 | | | R Berankis | 6 | | | | | | | | | | | |
| Q | A Kumantsov | 3 | 3$^r$ | | 8 | J Zopp | 3 | r | | | | | | | | | | |
| 8 | J Zopp | 6 | 5 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | Y-h Lu | 4 | 2 | | | | | | | | | | | | | | |
| | R Bautista-Agut | 6 | 6 | | | R Bautista-Agut | 6 | 6 | | | | | | | | | |
| WC | T Gabashvili | 6 | 6 | | WC | T Gabashvili | 3 | 4 | | | | | | | | | |
| Q | N Fidirko | 2 | 0 | | | | | | | | R Bautista-Agut | 4 | 6$^1$ | | | | |
| LL | I Nedelko | 6$^2$ | 2 | | | | | | | 4 | F Fognini | 6 | 7$^7$ | | | | |
| | S Stakhovsky | 7$^7$ | 6 | | | S Stakhovsky | 6$^4$ | 4 | | | | | | | | | |
| | T Kamke | 6 | 2 | 3 | 4 | F Fognini | 7$^7$ | 6 | | | | | | | | | |
| 4 | F Fognini | 4 | 6 | 6 | | | | | | | | | | 4 | F Fognini | 6 | 6 |
| 5 | L Lacko | 3 | 2 | | | | | | | | | | | | D Gimeno-Traver | 3 | 4 |
| | G Žemlja | 6 | 6 | | | G Žemlja | 2 | 7$^7$ | 3 | | | | | | | | |
| | F Cipolla | 7$^7$ | 7$^8$ | | | F Cipolla | 6 | 6$^5$ | 6 | | | | | | | | |
| Q | A Vasilevski | 6$^4$ | 6$^6$ | | | | | | | | F Cipolla | 2 | 5 | | | | |
| | F Serra | 6$^5$ | 2 | | | | | | | | D Gimeno-Traver | 6 | 7 | | | | |
| | D Gimeno-Traver | 7$^7$ | 6 | | | D Gimeno-Traver | 6 | 7$^7$ | | | | | | | | | |
| | Ł Kubot | 4 | 6 | 6 | | Ł Kubot | 4 | 6$^5$ | | | | | | | | | |
| 2 | D Istomin | 6 | 3 | 4 | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Andrey Kumantsov (qualified)
* Stanislav Poplavskyy (second round)
* Ivan Nedelko (qualifying competition, lucky loser)
* Sergey Betov (qualified)
* Mikhail Fufygin (second round)
* Egor Gerasimov (second round)
* Morgan Phillips (qualifying competition)
* Anton Zaitsev (second round)

### Qualifiers

* Andrey Kumantsov
* Nikolai Fidirko
* Andrei Vasilevski
* Sergey Betov

### Lucky loser

* Ivan Nedelko

### Draw
#### First qualifier

| Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Andrey Kumantsov | 6 | 7 | | | | |
| | Sergey Strelkov | 3 | 5 | | | | |
| | Sergey Strelkov | 3 | 5 | 1 | Andrey Kumantsov | 6 | 7$^7$ |
| | | | | 7 | Morgan Phillips | 1 | 6$^4$ |
| WC | Vugar Aliev | 2 | 5 | 7 | Morgan Phillips | 1 | 6$^4$ |
| 7 | Morgan Phillips | 6 | 7 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | | 2 | Stanislav Poplavskyy | 1 | 2 | | | | | |
| | Valery Rudnev | 4 | 7$^7$ | 6 | | Valery Rudnev | 6 | 6 | | | | | |
| | Aslan Karatsev | 6 | 6$^1$ | 3 | | | | | | Valery Rudnev | 3 | 6 | 0 |
| | Nikolai Fidirko | 6 | 6 | | | | | | | Nikolai Fidirko | 6 | 4 | 6 |
| WC | Timofey Skripkin | 2 | 0 | | | Nikolai Fidirko | 3 | 7 | 6 | | | | |
| | | | | | 8 | Anton Zaitsev | 6 | 5 | 2 | | | | |

#### Third qualifier

| Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Ivan Nedelko | 6 | 6 | | | | |
| WC | Nikita Gudozhnikov | 1 | 1 | | | | |
| WC | Nikita Gudozhnikov | 1 | 1 | 3 | Ivan Nedelko | 2 | 6$^5$ |
| | | | | | Andrei Vasilevski | 6 | 7$^7$ |
| | Andrei Vasilevski | 7 | 6 | | Andrei Vasilevski | 6 | 7$^7$ |
| 6 | Egor Gerasimov | 5 | 1 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | 4 | Sergey Betov | 6 | 6 | | | | | |
| WC | Artur Gusev | 0 | 0 | | Volodymyr Uzhylovskyi | 3 | 3 | | | | | |
| | Volodymyr Uzhylovskyi | 6 | 6 | | | | | | 4 | Sergey Betov | 6 | 6 |
| | Beka Komakhidze | 2 | 0 | | | | | | | František Čermák | 4 | 4 |
| | František Čermák | 6 | 6 | | František Čermák | 6 | 1 | 6 | | | | |
| | | | | 5 | Mikhail Fufygin | 4 | 6 | 0 | | | | |