Viktor Troicki Viktor Troicki ( sr-Cyrl, Виктор Троицки, ; born 10 February 1986) is a Serbian tennis coach and a former professional player. He won three singles and two doubles titles on the ATP Tour. Troicki won his first ATP singles title at t ...

and

Nenad Zimonjić Nenad Zimonjić ( sr-Cyrl, Ненад Зимоњић, ; born 4 June 1976) is a Serbian former professional tennis player who was ranked world No. 1 in doubles. He is an eight-time Grand Slam champion, having won the 2008 and 2009 Wimbledon Ch ...

were the defending champions, but lost in the first round to

Robin Haase Robin Haase (; born 6 April 1987) is a Dutch professional tennis player. He reached his career-high Association of Tennis Professionals, ATP singles ranking of world No. 33 in July 2012 and his highest doubles ranking of world No. 29 in May 2023 ...

and

Matwé Middelkoop Matwé Middelkoop (; born 3 September 1983) is a Dutch professional tennis player who specialises in doubles. He has won 14 doubles titles on the ATP Tour, most notably the 2022 Rotterdam Open alongside Robin Haase, and reached a career high dou ...

. Haase and Middelkoop went on to win the title, defeating

Nikola Mektić Nikola Mektić (born 24 December 1988) is a Croatian professional tennis player who is a former world No. 1 in doubles. He is a two-time Grand Slam champion, having won the 2021 Wimbledon Championships in men's doubles partnering compatriot Ma ...

and

Alexander Peya Alexander Peya (born 27 June 1980) is an Austrian tennis coach and a former professional player. His career-high doubles ranking was World No. 3, first achieved in August 2013. He also reached a career-high singles ranking of No. 92 in April 200 ...

in the final, 5–7, 6–4, 0–4

Seeds

Draw

External links

Main draw
{{DEFAULTSORT:2018 Diema Xtra Sofia Open - Singles

Sofia Open Sofia Open may refer to: *ATP Sofia Open, an ATP 250 Series tennis tournament started in 2016. *Sofia Open (1980–81), a defunct Grand Prix tennis event played from 1980 to 1981. *Vitosha New Otani Open, a defunct WTA Tour event from 1988 to 1989. ...

Sofia Open