2018 Diema Xtra Sofia Open
The 2018 Sofia Open was a tennis tournament played on indoor hard courts. It was the 3rd edition of the Sofia Open as part of the ATP World Tour 250 series of the 2018 ATP World Tour. It took place at the Arena Armeec in Sofia, Bulgaria, from February 5–11.Point distribution
Prize money
Seeds
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry as a lucky loser:
;Before the tournament
Seeds
- 1 Rankings are as of January 29, 2018.
Other entrants
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
;Before the tournament
- Mikhail Kukushkin
Champions
Singles