Marin Čilić Marin Čilić (; born 28 September 1988) is a Croatian professional tennis player. Čilić has won 20 ATP Tour singles titles, including a major at the 2014 US Open. He was also runner-up at the 2017 Wimbledon Championships and the 2018 Austral ...

was the defending champion but chose not to compete.

Martin Kližan Martin Kližan (; born 11 July 1989) is a Slovak former professional tennis player. The winner of the 2006 French Open boys' singles title, Kližan turned pro in 2007 and had a career-high singles ranking of world No. 24, achieved on 27 April ...

won his first

ATP World Tour The ATP Tour is a worldwide top-tier tennis tour for men organized by the Association of Tennis Professionals. The second-tier tour is the ATP Challenger Tour and the third-tier is the ITF Men's World Tennis Tour. The equivalent women's organis ...

title by defeating

Fabio Fognini Fabio Fognini (; born 24 May 1987) is an Italian professional tennis player. He has a career-high ranking of world No. 9 achieved on 15 July 2019. He is currently ranked (July 2022) in 64th place by the Association of Tennis Professionals (ATP) ...

in the final, 6–2, 6–3.

Seeds

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky loser

Ivan Nedelko Ivan Anatolyevich Nedelko (russian: Ива́н Анато́льевич Неде́лько; born 12 May 1986) is a Russian tennis player. Nedelko has a career high ATP singles ranking of 235 achieved on 23 July 2018. He also has a career high A ...

Draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

Main Draw

Qualifying Draw
{{DEFAULTSORT:2012 St. Petersburg Open - Singles

2012 Singles 1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. I ...

St. Petersburg Open - Singles 2012 in Russian tennis