2018 Diema Xtra Sofia Open
The 2018 Sofia Open (also known as 2018 DIEMA XTRA Sofia Open for sponsorship reasons) 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.