| 2018 Diema Xtra Sofia Open | |
|---|---|
| Date | 5–11 February |
| Edition | 3rd |
| Category | ATP World Tour 250 series |
| Draw | 28S / 16D |
| Prize money | €501,345 |
| Surface | Hard / indoor |
| Location | Sofia, Bulgaria |
| Venue | Arena Armeec |
| Champions | |
| Singles | |
 Mirza Bašić[1] | |
| Doubles | |
 Robin Haase / Matwé Middelkoop[2] | |
The 2018 Sofia Open (also known as 2018 DIEMA XTRA Sofia Open for sponsorship reasons)[3] was a men's tennis tournament played on indoor hard courts. It was the third 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 5 February until 11 February 2018. Unseeded Mirza Bašić, who entered the main draw as a qualifier, won the singles title.[4]
- ^ "2018 Sofia – Singles draw". Association of Tennis Professionals (ATP).
- ^ "2018 Sofia – Doubles draw". Association of Tennis Professionals (ATP).
- ^ "NOVA BROADCASTING GROUP ACQUIRES SOFIA OPEN BROADCASTING RIGHTS". sofiaopen.bg. Archived from the original on 3 February 2018. Retrieved 10 January 2018.
- ^ "Турнирът в София с ново име и спонсор" (in Bulgarian). tennis24.bg. Retrieved 22 December 2017.